A:
Positive:
1 x 30771550711 x 2797413719 x 1619555379 x 3895133209 x 1472323869 x 3541031501 x 20500716511 x 18637
Negative:
-1 x -307715507-11 x -27974137-19 x -16195553-79 x -3895133-209 x -1472323-869 x -354103-1501 x -205007-16511 x -18637
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 307,715,507, 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 | 307,715,507 | |
| -1 | -307,715,507 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 307,715,507.
Example:
1 x 307,715,507 = 307,715,507
and
-1 x -307,715,507 = 307,715,507
Notice both answers equal 307,715,507
With that explanation out of the way, let's continue. Next, we take the number 307,715,507 and divide it by 2:
307,715,507 ÷ 2 = 153,857,753.5
If the quotient is a whole number, then 2 and 153,857,753.5 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 | 307,715,507 | |
| -1 | -307,715,507 |
Now, we try dividing 307,715,507 by 3:
307,715,507 ÷ 3 = 102,571,835.6667
If the quotient is a whole number, then 3 and 102,571,835.6667 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 | 307,715,507 | |
| -1 | -307,715,507 |
Let's try dividing by 4:
307,715,507 ÷ 4 = 76,928,876.75
If the quotient is a whole number, then 4 and 76,928,876.75 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 | 307,715,507 | |
| -1 | 307,715,507 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 79 | 209 | 869 | 1,501 | 16,511 | 18,637 | 205,007 | 354,103 | 1,472,323 | 3,895,133 | 16,195,553 | 27,974,137 | 307,715,507 |
| -1 | -11 | -19 | -79 | -209 | -869 | -1,501 | -16,511 | -18,637 | -205,007 | -354,103 | -1,472,323 | -3,895,133 | -16,195,553 | -27,974,137 | -307,715,507 |
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