A:
Positive:
1 x 2565328855 x 513065777 x 3664755535 x 732951149 x 523536559 x 4348015245 x 1047073295 x 869603413 x 6211452065 x 1242292891 x 8873514455 x 17747
Negative:
-1 x -256532885-5 x -51306577-7 x -36647555-35 x -7329511-49 x -5235365-59 x -4348015-245 x -1047073-295 x -869603-413 x -621145-2065 x -124229-2891 x -88735-14455 x -17747
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 256,532,885, 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 | 256,532,885 | |
| -1 | -256,532,885 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 256,532,885.
Example:
1 x 256,532,885 = 256,532,885
and
-1 x -256,532,885 = 256,532,885
Notice both answers equal 256,532,885
With that explanation out of the way, let's continue. Next, we take the number 256,532,885 and divide it by 2:
256,532,885 ÷ 2 = 128,266,442.5
If the quotient is a whole number, then 2 and 128,266,442.5 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 | 256,532,885 | |
| -1 | -256,532,885 |
Now, we try dividing 256,532,885 by 3:
256,532,885 ÷ 3 = 85,510,961.6667
If the quotient is a whole number, then 3 and 85,510,961.6667 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 | 256,532,885 | |
| -1 | -256,532,885 |
Let's try dividing by 4:
256,532,885 ÷ 4 = 64,133,221.25
If the quotient is a whole number, then 4 and 64,133,221.25 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 | 256,532,885 | |
| -1 | 256,532,885 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 59 | 245 | 295 | 413 | 2,065 | 2,891 | 14,455 | 17,747 | 88,735 | 124,229 | 621,145 | 869,603 | 1,047,073 | 4,348,015 | 5,235,365 | 7,329,511 | 36,647,555 | 51,306,577 | 256,532,885 |
| -1 | -5 | -7 | -35 | -49 | -59 | -245 | -295 | -413 | -2,065 | -2,891 | -14,455 | -17,747 | -88,735 | -124,229 | -621,145 | -869,603 | -1,047,073 | -4,348,015 | -5,235,365 | -7,329,511 | -36,647,555 | -51,306,577 | -256,532,885 |
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