Q: What are the factor combinations of the number 40,388,880?

 A:
Positive:   1 x 403888802 x 201944403 x 134629604 x 100972205 x 80777766 x 67314807 x 57698408 x 504861010 x 403888812 x 336574014 x 288492015 x 269259216 x 252430520 x 201944421 x 192328024 x 168287028 x 144246029 x 139272030 x 134629635 x 115396840 x 100972242 x 96164048 x 84143556 x 72123058 x 69636060 x 67314870 x 57698480 x 50486184 x 48082087 x 464240105 x 384656112 x 360615116 x 348180120 x 336574140 x 288492145 x 278544168 x 240410174 x 232120203 x 198960210 x 192328232 x 174090240 x 168287280 x 144246290 x 139272336 x 120205348 x 116060406 x 99480420 x 96164435 x 92848464 x 87045560 x 72123580 x 69636609 x 66320696 x 58030812 x 49740829 x 48720840 x 48082870 x 464241015 x 397921160 x 348181218 x 331601392 x 290151624 x 248701658 x 243601680 x 240411740 x 232122030 x 198962320 x 174092436 x 165802487 x 162403045 x 132643248 x 124353316 x 121803480 x 116064060 x 99484145 x 97444872 x 82904974 x 81205803 x 69606090 x 6632
Negative: -1 x -40388880-2 x -20194440-3 x -13462960-4 x -10097220-5 x -8077776-6 x -6731480-7 x -5769840-8 x -5048610-10 x -4038888-12 x -3365740-14 x -2884920-15 x -2692592-16 x -2524305-20 x -2019444-21 x -1923280-24 x -1682870-28 x -1442460-29 x -1392720-30 x -1346296-35 x -1153968-40 x -1009722-42 x -961640-48 x -841435-56 x -721230-58 x -696360-60 x -673148-70 x -576984-80 x -504861-84 x -480820-87 x -464240-105 x -384656-112 x -360615-116 x -348180-120 x -336574-140 x -288492-145 x -278544-168 x -240410-174 x -232120-203 x -198960-210 x -192328-232 x -174090-240 x -168287-280 x -144246-290 x -139272-336 x -120205-348 x -116060-406 x -99480-420 x -96164-435 x -92848-464 x -87045-560 x -72123-580 x -69636-609 x -66320-696 x -58030-812 x -49740-829 x -48720-840 x -48082-870 x -46424-1015 x -39792-1160 x -34818-1218 x -33160-1392 x -29015-1624 x -24870-1658 x -24360-1680 x -24041-1740 x -23212-2030 x -19896-2320 x -17409-2436 x -16580-2487 x -16240-3045 x -13264-3248 x -12435-3316 x -12180-3480 x -11606-4060 x -9948-4145 x -9744-4872 x -8290-4974 x -8120-5803 x -6960-6090 x -6632


How do I find the factor combinations of the number 40,388,880?

Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 40,388,880, it is easier to work with a table - it's called factoring from the outside in.

Outside in Factoring

We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.

1 40,388,880
-1 -40,388,880

Why are the negative numbers included?

When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,388,880.

Example:
1 x 40,388,880 = 40,388,880
and
-1 x -40,388,880 = 40,388,880
Notice both answers equal 40,388,880

With that explanation out of the way, let's continue. Next, we take the number 40,388,880 and divide it by 2:

40,388,880 ÷ 2 = 20,194,440

If the quotient is a whole number, then 2 and 20,194,440 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!

Here is what our table should look like at this step:

1 2 20,194,440 40,388,880
-1 -2 -20,194,440 -40,388,880

Now, we try dividing 40,388,880 by 3:

40,388,880 ÷ 3 = 13,462,960

If the quotient is a whole number, then 3 and 13,462,960 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!

Here is what our table should look like at this step:

1 2 3 13,462,960 20,194,440 40,388,880
-1 -2 -3 -13,462,960 -20,194,440 -40,388,880

Let's try dividing by 4:

40,388,880 ÷ 4 = 10,097,220

If the quotient is a whole number, then 4 and 10,097,220 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!

Here is what our table should look like at this step:

1 2 3 4 10,097,220 13,462,960 20,194,440 40,388,880
-1 -2 -3 -4 -10,097,220 -13,462,960 -20,194,440 40,388,880
Keep dividing by the next highest number until you cannot divide anymore.

If you did it right, you will end up with this table:

12345678101214151620212428293035404248565860708084871051121161201401451681742032102322402802903363484064204354645605806096968128298408701,0151,1601,2181,3921,6241,6581,6801,7402,0302,3202,4362,4873,0453,2483,3163,4804,0604,1454,8724,9745,8036,0906,6326,9608,1208,2909,7449,94811,60612,18012,43513,26416,24016,58017,40919,89623,21224,04124,36024,87029,01533,16034,81839,79246,42448,08248,72049,74058,03066,32069,63672,12387,04592,84896,16499,480116,060120,205139,272144,246168,287174,090192,328198,960232,120240,410278,544288,492336,574348,180360,615384,656464,240480,820504,861576,984673,148696,360721,230841,435961,6401,009,7221,153,9681,346,2961,392,7201,442,4601,682,8701,923,2802,019,4442,524,3052,692,5922,884,9203,365,7404,038,8885,048,6105,769,8406,731,4808,077,77610,097,22013,462,96020,194,44040,388,880
-1-2-3-4-5-6-7-8-10-12-14-15-16-20-21-24-28-29-30-35-40-42-48-56-58-60-70-80-84-87-105-112-116-120-140-145-168-174-203-210-232-240-280-290-336-348-406-420-435-464-560-580-609-696-812-829-840-870-1,015-1,160-1,218-1,392-1,624-1,658-1,680-1,740-2,030-2,320-2,436-2,487-3,045-3,248-3,316-3,480-4,060-4,145-4,872-4,974-5,803-6,090-6,632-6,960-8,120-8,290-9,744-9,948-11,606-12,180-12,435-13,264-16,240-16,580-17,409-19,896-23,212-24,041-24,360-24,870-29,015-33,160-34,818-39,792-46,424-48,082-48,720-49,740-58,030-66,320-69,636-72,123-87,045-92,848-96,164-99,480-116,060-120,205-139,272-144,246-168,287-174,090-192,328-198,960-232,120-240,410-278,544-288,492-336,574-348,180-360,615-384,656-464,240-480,820-504,861-576,984-673,148-696,360-721,230-841,435-961,640-1,009,722-1,153,968-1,346,296-1,392,720-1,442,460-1,682,870-1,923,280-2,019,444-2,524,305-2,692,592-2,884,920-3,365,740-4,038,888-5,048,610-5,769,840-6,731,480-8,077,776-10,097,220-13,462,960-20,194,440-40,388,880

More Examples

Here are some more numbers to try:

40,388,87840,388,87940,388,88140,388,882
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