A:
Positive:
1 x 1312313455 x 262462697 x 1874733535 x 3749467283 x 4637151415 x 927431981 x 662459905 x 13249
Negative:
-1 x -131231345-5 x -26246269-7 x -18747335-35 x -3749467-283 x -463715-1415 x -92743-1981 x -66245-9905 x -13249
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 131,231,345, 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 | 131,231,345 | |
| -1 | -131,231,345 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 131,231,345.
Example:
1 x 131,231,345 = 131,231,345
and
-1 x -131,231,345 = 131,231,345
Notice both answers equal 131,231,345
With that explanation out of the way, let's continue. Next, we take the number 131,231,345 and divide it by 2:
131,231,345 ÷ 2 = 65,615,672.5
If the quotient is a whole number, then 2 and 65,615,672.5 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 | 131,231,345 | |
| -1 | -131,231,345 |
Now, we try dividing 131,231,345 by 3:
131,231,345 ÷ 3 = 43,743,781.6667
If the quotient is a whole number, then 3 and 43,743,781.6667 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 | 131,231,345 | |
| -1 | -131,231,345 |
Let's try dividing by 4:
131,231,345 ÷ 4 = 32,807,836.25
If the quotient is a whole number, then 4 and 32,807,836.25 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 | 131,231,345 | |
| -1 | 131,231,345 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 283 | 1,415 | 1,981 | 9,905 | 13,249 | 66,245 | 92,743 | 463,715 | 3,749,467 | 18,747,335 | 26,246,269 | 131,231,345 |
| -1 | -5 | -7 | -35 | -283 | -1,415 | -1,981 | -9,905 | -13,249 | -66,245 | -92,743 | -463,715 | -3,749,467 | -18,747,335 | -26,246,269 | -131,231,345 |
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