A:
Positive:
1 x 1315074955 x 263014997 x 1878678517 x 773573535 x 375735785 x 1547147119 x 1105105595 x 221021
Negative:
-1 x -131507495-5 x -26301499-7 x -18786785-17 x -7735735-35 x -3757357-85 x -1547147-119 x -1105105-595 x -221021
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 131,507,495, 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 | 131,507,495 | |
| -1 | -131,507,495 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 131,507,495.
Example:
1 x 131,507,495 = 131,507,495
and
-1 x -131,507,495 = 131,507,495
Notice both answers equal 131,507,495
With that explanation out of the way, let's continue. Next, we take the number 131,507,495 and divide it by 2:
131,507,495 ÷ 2 = 65,753,747.5
If the quotient is a whole number, then 2 and 65,753,747.5 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 | 131,507,495 | |
| -1 | -131,507,495 |
Now, we try dividing 131,507,495 by 3:
131,507,495 ÷ 3 = 43,835,831.6667
If the quotient is a whole number, then 3 and 43,835,831.6667 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 | 131,507,495 | |
| -1 | -131,507,495 |
Let's try dividing by 4:
131,507,495 ÷ 4 = 32,876,873.75
If the quotient is a whole number, then 4 and 32,876,873.75 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 | 131,507,495 | |
| -1 | 131,507,495 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 17 | 35 | 85 | 119 | 595 | 221,021 | 1,105,105 | 1,547,147 | 3,757,357 | 7,735,735 | 18,786,785 | 26,301,499 | 131,507,495 |
| -1 | -5 | -7 | -17 | -35 | -85 | -119 | -595 | -221,021 | -1,105,105 | -1,547,147 | -3,757,357 | -7,735,735 | -18,786,785 | -26,301,499 | -131,507,495 |
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