A:
Positive:
1 x 13133731729 x 452887347 x 2794411167 x 786451577 x 2276211363 x 963594843 x 271197849 x 16733
Negative:
-1 x -131337317-29 x -4528873-47 x -2794411-167 x -786451-577 x -227621-1363 x -96359-4843 x -27119-7849 x -16733
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 131,337,317, 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 | 131,337,317 | |
| -1 | -131,337,317 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 131,337,317.
Example:
1 x 131,337,317 = 131,337,317
and
-1 x -131,337,317 = 131,337,317
Notice both answers equal 131,337,317
With that explanation out of the way, let's continue. Next, we take the number 131,337,317 and divide it by 2:
131,337,317 ÷ 2 = 65,668,658.5
If the quotient is a whole number, then 2 and 65,668,658.5 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 | 131,337,317 | |
| -1 | -131,337,317 |
Now, we try dividing 131,337,317 by 3:
131,337,317 ÷ 3 = 43,779,105.6667
If the quotient is a whole number, then 3 and 43,779,105.6667 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 | 131,337,317 | |
| -1 | -131,337,317 |
Let's try dividing by 4:
131,337,317 ÷ 4 = 32,834,329.25
If the quotient is a whole number, then 4 and 32,834,329.25 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 | 131,337,317 | |
| -1 | 131,337,317 |
If you did it right, you will end up with this table:
| 1 | 29 | 47 | 167 | 577 | 1,363 | 4,843 | 7,849 | 16,733 | 27,119 | 96,359 | 227,621 | 786,451 | 2,794,411 | 4,528,873 | 131,337,317 |
| -1 | -29 | -47 | -167 | -577 | -1,363 | -4,843 | -7,849 | -16,733 | -27,119 | -96,359 | -227,621 | -786,451 | -2,794,411 | -4,528,873 | -131,337,317 |
Here are some more numbers to try:
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