A:
Positive:
1 x 2314030155 x 4628060359 x 3922085107 x 2162645295 x 784417535 x 4325296313 x 366557331 x 31565
Negative:
-1 x -231403015-5 x -46280603-59 x -3922085-107 x -2162645-295 x -784417-535 x -432529-6313 x -36655-7331 x -31565
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 231,403,015, 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 | 231,403,015 | |
| -1 | -231,403,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 231,403,015.
Example:
1 x 231,403,015 = 231,403,015
and
-1 x -231,403,015 = 231,403,015
Notice both answers equal 231,403,015
With that explanation out of the way, let's continue. Next, we take the number 231,403,015 and divide it by 2:
231,403,015 ÷ 2 = 115,701,507.5
If the quotient is a whole number, then 2 and 115,701,507.5 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 | 231,403,015 | |
| -1 | -231,403,015 |
Now, we try dividing 231,403,015 by 3:
231,403,015 ÷ 3 = 77,134,338.3333
If the quotient is a whole number, then 3 and 77,134,338.3333 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 | 231,403,015 | |
| -1 | -231,403,015 |
Let's try dividing by 4:
231,403,015 ÷ 4 = 57,850,753.75
If the quotient is a whole number, then 4 and 57,850,753.75 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 | 231,403,015 | |
| -1 | 231,403,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 59 | 107 | 295 | 535 | 6,313 | 7,331 | 31,565 | 36,655 | 432,529 | 784,417 | 2,162,645 | 3,922,085 | 46,280,603 | 231,403,015 |
| -1 | -5 | -59 | -107 | -295 | -535 | -6,313 | -7,331 | -31,565 | -36,655 | -432,529 | -784,417 | -2,162,645 | -3,922,085 | -46,280,603 | -231,403,015 |
Here are some more numbers to try:
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