A:
Positive:
1 x 23157137311 x 2105194319 x 12187967121 x 1913813209 x 11079971331 x 1739832299 x 1007279157 x 25289
Negative:
-1 x -231571373-11 x -21051943-19 x -12187967-121 x -1913813-209 x -1107997-1331 x -173983-2299 x -100727-9157 x -25289
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 231,571,373, 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 | 231,571,373 | |
| -1 | -231,571,373 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 231,571,373.
Example:
1 x 231,571,373 = 231,571,373
and
-1 x -231,571,373 = 231,571,373
Notice both answers equal 231,571,373
With that explanation out of the way, let's continue. Next, we take the number 231,571,373 and divide it by 2:
231,571,373 ÷ 2 = 115,785,686.5
If the quotient is a whole number, then 2 and 115,785,686.5 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 | 231,571,373 | |
| -1 | -231,571,373 |
Now, we try dividing 231,571,373 by 3:
231,571,373 ÷ 3 = 77,190,457.6667
If the quotient is a whole number, then 3 and 77,190,457.6667 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 | 231,571,373 | |
| -1 | -231,571,373 |
Let's try dividing by 4:
231,571,373 ÷ 4 = 57,892,843.25
If the quotient is a whole number, then 4 and 57,892,843.25 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 | 231,571,373 | |
| -1 | 231,571,373 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 121 | 209 | 1,331 | 2,299 | 9,157 | 25,289 | 100,727 | 173,983 | 1,107,997 | 1,913,813 | 12,187,967 | 21,051,943 | 231,571,373 |
| -1 | -11 | -19 | -121 | -209 | -1,331 | -2,299 | -9,157 | -25,289 | -100,727 | -173,983 | -1,107,997 | -1,913,813 | -12,187,967 | -21,051,943 | -231,571,373 |
Here are some more numbers to try:
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