A:
Positive:
1 x 23123101313 x 17787001157 x 1472809277 x 834769409 x 5653572041 x 1132933601 x 642135317 x 43489
Negative:
-1 x -231231013-13 x -17787001-157 x -1472809-277 x -834769-409 x -565357-2041 x -113293-3601 x -64213-5317 x -43489
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 231,231,013, 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 | 231,231,013 | |
| -1 | -231,231,013 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 231,231,013.
Example:
1 x 231,231,013 = 231,231,013
and
-1 x -231,231,013 = 231,231,013
Notice both answers equal 231,231,013
With that explanation out of the way, let's continue. Next, we take the number 231,231,013 and divide it by 2:
231,231,013 ÷ 2 = 115,615,506.5
If the quotient is a whole number, then 2 and 115,615,506.5 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 | 231,231,013 | |
| -1 | -231,231,013 |
Now, we try dividing 231,231,013 by 3:
231,231,013 ÷ 3 = 77,077,004.3333
If the quotient is a whole number, then 3 and 77,077,004.3333 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 | 231,231,013 | |
| -1 | -231,231,013 |
Let's try dividing by 4:
231,231,013 ÷ 4 = 57,807,753.25
If the quotient is a whole number, then 4 and 57,807,753.25 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 | 231,231,013 | |
| -1 | 231,231,013 |
If you did it right, you will end up with this table:
| 1 | 13 | 157 | 277 | 409 | 2,041 | 3,601 | 5,317 | 43,489 | 64,213 | 113,293 | 565,357 | 834,769 | 1,472,809 | 17,787,001 | 231,231,013 |
| -1 | -13 | -157 | -277 | -409 | -2,041 | -3,601 | -5,317 | -43,489 | -64,213 | -113,293 | -565,357 | -834,769 | -1,472,809 | -17,787,001 | -231,231,013 |
Here are some more numbers to try:
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