A:
Positive:
1 x 1317156655 x 2634313343 x 3063155215 x 612631739 x 178235829 x 1588853695 x 356474145 x 31777
Negative:
-1 x -131715665-5 x -26343133-43 x -3063155-215 x -612631-739 x -178235-829 x -158885-3695 x -35647-4145 x -31777
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 131,715,665, 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 | 131,715,665 | |
| -1 | -131,715,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 131,715,665.
Example:
1 x 131,715,665 = 131,715,665
and
-1 x -131,715,665 = 131,715,665
Notice both answers equal 131,715,665
With that explanation out of the way, let's continue. Next, we take the number 131,715,665 and divide it by 2:
131,715,665 ÷ 2 = 65,857,832.5
If the quotient is a whole number, then 2 and 65,857,832.5 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 | 131,715,665 | |
| -1 | -131,715,665 |
Now, we try dividing 131,715,665 by 3:
131,715,665 ÷ 3 = 43,905,221.6667
If the quotient is a whole number, then 3 and 43,905,221.6667 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 | 131,715,665 | |
| -1 | -131,715,665 |
Let's try dividing by 4:
131,715,665 ÷ 4 = 32,928,916.25
If the quotient is a whole number, then 4 and 32,928,916.25 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 | 131,715,665 | |
| -1 | 131,715,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 43 | 215 | 739 | 829 | 3,695 | 4,145 | 31,777 | 35,647 | 158,885 | 178,235 | 612,631 | 3,063,155 | 26,343,133 | 131,715,665 |
| -1 | -5 | -43 | -215 | -739 | -829 | -3,695 | -4,145 | -31,777 | -35,647 | -158,885 | -178,235 | -612,631 | -3,063,155 | -26,343,133 | -131,715,665 |
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