A:
Positive:
1 x 63163120911 x 5742101917 x 37154777187 x 3377707251 x 25164592761 x 2287694267 x 14802713457 x 46937
Negative:
-1 x -631631209-11 x -57421019-17 x -37154777-187 x -3377707-251 x -2516459-2761 x -228769-4267 x -148027-13457 x -46937
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 631,631,209, 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 | 631,631,209 | |
| -1 | -631,631,209 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 631,631,209.
Example:
1 x 631,631,209 = 631,631,209
and
-1 x -631,631,209 = 631,631,209
Notice both answers equal 631,631,209
With that explanation out of the way, let's continue. Next, we take the number 631,631,209 and divide it by 2:
631,631,209 ÷ 2 = 315,815,604.5
If the quotient is a whole number, then 2 and 315,815,604.5 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 | 631,631,209 | |
| -1 | -631,631,209 |
Now, we try dividing 631,631,209 by 3:
631,631,209 ÷ 3 = 210,543,736.3333
If the quotient is a whole number, then 3 and 210,543,736.3333 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 | 631,631,209 | |
| -1 | -631,631,209 |
Let's try dividing by 4:
631,631,209 ÷ 4 = 157,907,802.25
If the quotient is a whole number, then 4 and 157,907,802.25 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 | 631,631,209 | |
| -1 | 631,631,209 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 187 | 251 | 2,761 | 4,267 | 13,457 | 46,937 | 148,027 | 228,769 | 2,516,459 | 3,377,707 | 37,154,777 | 57,421,019 | 631,631,209 |
| -1 | -11 | -17 | -187 | -251 | -2,761 | -4,267 | -13,457 | -46,937 | -148,027 | -228,769 | -2,516,459 | -3,377,707 | -37,154,777 | -57,421,019 | -631,631,209 |
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