Q: What are the factor combinations of the number 240,787,080?

 A:
Positive:   1 x 2407870802 x 1203935403 x 802623604 x 601967705 x 481574166 x 401311808 x 300983859 x 2675412010 x 2407870812 x 2006559015 x 1605247218 x 1337706020 x 1203935424 x 1003279527 x 891804030 x 802623636 x 668853040 x 601967745 x 535082454 x 445902060 x 401311872 x 334426581 x 297268090 x 2675412108 x 2229510120 x 2006559135 x 1783608162 x 1486340180 x 1337706216 x 1114755270 x 891804324 x 743170360 x 668853405 x 594536540 x 445902648 x 371585810 x 2972681080 x 2229511620 x 1486343240 x 74317
Negative: -1 x -240787080-2 x -120393540-3 x -80262360-4 x -60196770-5 x -48157416-6 x -40131180-8 x -30098385-9 x -26754120-10 x -24078708-12 x -20065590-15 x -16052472-18 x -13377060-20 x -12039354-24 x -10032795-27 x -8918040-30 x -8026236-36 x -6688530-40 x -6019677-45 x -5350824-54 x -4459020-60 x -4013118-72 x -3344265-81 x -2972680-90 x -2675412-108 x -2229510-120 x -2006559-135 x -1783608-162 x -1486340-180 x -1337706-216 x -1114755-270 x -891804-324 x -743170-360 x -668853-405 x -594536-540 x -445902-648 x -371585-810 x -297268-1080 x -222951-1620 x -148634-3240 x -74317


How do I find the factor combinations of the number 240,787,080?

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 240,787,080, 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.

1 240,787,080
-1 -240,787,080

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 240,787,080.

Example:
1 x 240,787,080 = 240,787,080
and
-1 x -240,787,080 = 240,787,080
Notice both answers equal 240,787,080

With that explanation out of the way, let's continue. Next, we take the number 240,787,080 and divide it by 2:

240,787,080 ÷ 2 = 120,393,540

If the quotient is a whole number, then 2 and 120,393,540 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 2 120,393,540 240,787,080
-1 -2 -120,393,540 -240,787,080

Now, we try dividing 240,787,080 by 3:

240,787,080 ÷ 3 = 80,262,360

If the quotient is a whole number, then 3 and 80,262,360 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 80,262,360 120,393,540 240,787,080
-1 -2 -3 -80,262,360 -120,393,540 -240,787,080

Let's try dividing by 4:

240,787,080 ÷ 4 = 60,196,770

If the quotient is a whole number, then 4 and 60,196,770 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 60,196,770 80,262,360 120,393,540 240,787,080
-1 -2 -3 -4 -60,196,770 -80,262,360 -120,393,540 240,787,080
Keep dividing by the next highest number until you cannot divide anymore.

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

12345689101215182024273036404554607281901081201351621802162703243604055406488101,0801,6203,24074,317148,634222,951297,268371,585445,902594,536668,853743,170891,8041,114,7551,337,7061,486,3401,783,6082,006,5592,229,5102,675,4122,972,6803,344,2654,013,1184,459,0205,350,8246,019,6776,688,5308,026,2368,918,04010,032,79512,039,35413,377,06016,052,47220,065,59024,078,70826,754,12030,098,38540,131,18048,157,41660,196,77080,262,360120,393,540240,787,080
-1-2-3-4-5-6-8-9-10-12-15-18-20-24-27-30-36-40-45-54-60-72-81-90-108-120-135-162-180-216-270-324-360-405-540-648-810-1,080-1,620-3,240-74,317-148,634-222,951-297,268-371,585-445,902-594,536-668,853-743,170-891,804-1,114,755-1,337,706-1,486,340-1,783,608-2,006,559-2,229,510-2,675,412-2,972,680-3,344,265-4,013,118-4,459,020-5,350,824-6,019,677-6,688,530-8,026,236-8,918,040-10,032,795-12,039,354-13,377,060-16,052,472-20,065,590-24,078,708-26,754,120-30,098,385-40,131,180-48,157,416-60,196,770-80,262,360-120,393,540-240,787,080

More Examples

Here are some more numbers to try:

240,787,078240,787,079240,787,081240,787,082
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