A:
Positive:
1 x 15717991311 x 1428908319 x 827262729 x 5419997209 x 752057319 x 492727551 x 2852636061 x 25933
Negative:
-1 x -157179913-11 x -14289083-19 x -8272627-29 x -5419997-209 x -752057-319 x -492727-551 x -285263-6061 x -25933
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 157,179,913, 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 | 157,179,913 | |
| -1 | -157,179,913 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 157,179,913.
Example:
1 x 157,179,913 = 157,179,913
and
-1 x -157,179,913 = 157,179,913
Notice both answers equal 157,179,913
With that explanation out of the way, let's continue. Next, we take the number 157,179,913 and divide it by 2:
157,179,913 ÷ 2 = 78,589,956.5
If the quotient is a whole number, then 2 and 78,589,956.5 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 | 157,179,913 | |
| -1 | -157,179,913 |
Now, we try dividing 157,179,913 by 3:
157,179,913 ÷ 3 = 52,393,304.3333
If the quotient is a whole number, then 3 and 52,393,304.3333 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 | 157,179,913 | |
| -1 | -157,179,913 |
Let's try dividing by 4:
157,179,913 ÷ 4 = 39,294,978.25
If the quotient is a whole number, then 4 and 39,294,978.25 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 | 157,179,913 | |
| -1 | 157,179,913 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 29 | 209 | 319 | 551 | 6,061 | 25,933 | 285,263 | 492,727 | 752,057 | 5,419,997 | 8,272,627 | 14,289,083 | 157,179,913 |
| -1 | -11 | -19 | -29 | -209 | -319 | -551 | -6,061 | -25,933 | -285,263 | -492,727 | -752,057 | -5,419,997 | -8,272,627 | -14,289,083 | -157,179,913 |
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