Q: What are the factor combinations of the number 1,087,320?

 A:
Positive:   1 x 10873202 x 5436603 x 3624404 x 2718305 x 2174646 x 1812208 x 13591510 x 10873212 x 9061013 x 8364015 x 7248817 x 6396020 x 5436624 x 4530526 x 4182030 x 3624434 x 3198039 x 2788040 x 2718341 x 2652051 x 2132052 x 2091060 x 1812265 x 1672868 x 1599078 x 1394082 x 1326085 x 12792102 x 10660104 x 10455120 x 9061123 x 8840130 x 8364136 x 7995156 x 6970164 x 6630170 x 6396195 x 5576204 x 5330205 x 5304221 x 4920246 x 4420255 x 4264260 x 4182312 x 3485328 x 3315340 x 3198390 x 2788408 x 2665410 x 2652442 x 2460492 x 2210510 x 2132520 x 2091533 x 2040615 x 1768663 x 1640680 x 1599697 x 1560780 x 1394820 x 1326884 x 1230984 x 11051020 x 1066
Negative: -1 x -1087320-2 x -543660-3 x -362440-4 x -271830-5 x -217464-6 x -181220-8 x -135915-10 x -108732-12 x -90610-13 x -83640-15 x -72488-17 x -63960-20 x -54366-24 x -45305-26 x -41820-30 x -36244-34 x -31980-39 x -27880-40 x -27183-41 x -26520-51 x -21320-52 x -20910-60 x -18122-65 x -16728-68 x -15990-78 x -13940-82 x -13260-85 x -12792-102 x -10660-104 x -10455-120 x -9061-123 x -8840-130 x -8364-136 x -7995-156 x -6970-164 x -6630-170 x -6396-195 x -5576-204 x -5330-205 x -5304-221 x -4920-246 x -4420-255 x -4264-260 x -4182-312 x -3485-328 x -3315-340 x -3198-390 x -2788-408 x -2665-410 x -2652-442 x -2460-492 x -2210-510 x -2132-520 x -2091-533 x -2040-615 x -1768-663 x -1640-680 x -1599-697 x -1560-780 x -1394-820 x -1326-884 x -1230-984 x -1105-1020 x -1066


How do I find the factor combinations of the number 1,087,320?

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 1,087,320, 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 1,087,320
-1 -1,087,320

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 1,087,320.

Example:
1 x 1,087,320 = 1,087,320
and
-1 x -1,087,320 = 1,087,320
Notice both answers equal 1,087,320

With that explanation out of the way, let's continue. Next, we take the number 1,087,320 and divide it by 2:

1,087,320 ÷ 2 = 543,660

If the quotient is a whole number, then 2 and 543,660 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 2 543,660 1,087,320
-1 -2 -543,660 -1,087,320

Now, we try dividing 1,087,320 by 3:

1,087,320 ÷ 3 = 362,440

If the quotient is a whole number, then 3 and 362,440 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 3 362,440 543,660 1,087,320
-1 -2 -3 -362,440 -543,660 -1,087,320

Let's try dividing by 4:

1,087,320 ÷ 4 = 271,830

If the quotient is a whole number, then 4 and 271,830 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 4 271,830 362,440 543,660 1,087,320
-1 -2 -3 -4 -271,830 -362,440 -543,660 1,087,320
Keep dividing by the next highest number until you cannot divide anymore.

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

12345681012131517202426303439404151526065687882851021041201231301361561641701952042052212462552603123283403904084104424925105205336156636806977808208849841,0201,0661,1051,2301,3261,3941,5601,5991,6401,7682,0402,0912,1322,2102,4602,6522,6652,7883,1983,3153,4854,1824,2644,4204,9205,3045,3305,5766,3966,6306,9707,9958,3648,8409,06110,45510,66012,79213,26013,94015,99016,72818,12220,91021,32026,52027,18327,88031,98036,24441,82045,30554,36663,96072,48883,64090,610108,732135,915181,220217,464271,830362,440543,6601,087,320
-1-2-3-4-5-6-8-10-12-13-15-17-20-24-26-30-34-39-40-41-51-52-60-65-68-78-82-85-102-104-120-123-130-136-156-164-170-195-204-205-221-246-255-260-312-328-340-390-408-410-442-492-510-520-533-615-663-680-697-780-820-884-984-1,020-1,066-1,105-1,230-1,326-1,394-1,560-1,599-1,640-1,768-2,040-2,091-2,132-2,210-2,460-2,652-2,665-2,788-3,198-3,315-3,485-4,182-4,264-4,420-4,920-5,304-5,330-5,576-6,396-6,630-6,970-7,995-8,364-8,840-9,061-10,455-10,660-12,792-13,260-13,940-15,990-16,728-18,122-20,910-21,320-26,520-27,183-27,880-31,980-36,244-41,820-45,305-54,366-63,960-72,488-83,640-90,610-108,732-135,915-181,220-217,464-271,830-362,440-543,660-1,087,320

More Examples

Here are some more numbers to try:

1,087,3181,087,3191,087,3211,087,322
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