A:
Positive:
1 x 725134277 x 1035906129 x 2500463203 x 357209523 x 138649683 x 1061693661 x 198074781 x 15167
Negative:
-1 x -72513427-7 x -10359061-29 x -2500463-203 x -357209-523 x -138649-683 x -106169-3661 x -19807-4781 x -15167
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 72,513,427, it is easier to work with a table - it's called factoring from the outside in.
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 | 72,513,427 | |
| -1 | -72,513,427 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,513,427.
Example:
1 x 72,513,427 = 72,513,427
and
-1 x -72,513,427 = 72,513,427
Notice both answers equal 72,513,427
With that explanation out of the way, let's continue. Next, we take the number 72,513,427 and divide it by 2:
72,513,427 ÷ 2 = 36,256,713.5
If the quotient is a whole number, then 2 and 36,256,713.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 72,513,427 | |
| -1 | -72,513,427 |
Now, we try dividing 72,513,427 by 3:
72,513,427 ÷ 3 = 24,171,142.3333
If the quotient is a whole number, then 3 and 24,171,142.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 72,513,427 | |
| -1 | -72,513,427 |
Let's try dividing by 4:
72,513,427 ÷ 4 = 18,128,356.75
If the quotient is a whole number, then 4 and 18,128,356.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 72,513,427 | |
| -1 | 72,513,427 |
If you did it right, you will end up with this table:
| 1 | 7 | 29 | 203 | 523 | 683 | 3,661 | 4,781 | 15,167 | 19,807 | 106,169 | 138,649 | 357,209 | 2,500,463 | 10,359,061 | 72,513,427 |
| -1 | -7 | -29 | -203 | -523 | -683 | -3,661 | -4,781 | -15,167 | -19,807 | -106,169 | -138,649 | -357,209 | -2,500,463 | -10,359,061 | -72,513,427 |
Here are some more numbers to try:
Try the factor calculator