A:
Positive:
1 x 3966994577 x 5667135111 x 3606358777 x 5151941163 x 24337391141 x 3476771793 x 22124912551 x 31607
Negative:
-1 x -396699457-7 x -56671351-11 x -36063587-77 x -5151941-163 x -2433739-1141 x -347677-1793 x -221249-12551 x -31607
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 396,699,457, 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 | 396,699,457 | |
| -1 | -396,699,457 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 396,699,457.
Example:
1 x 396,699,457 = 396,699,457
and
-1 x -396,699,457 = 396,699,457
Notice both answers equal 396,699,457
With that explanation out of the way, let's continue. Next, we take the number 396,699,457 and divide it by 2:
396,699,457 ÷ 2 = 198,349,728.5
If the quotient is a whole number, then 2 and 198,349,728.5 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 | 396,699,457 | |
| -1 | -396,699,457 |
Now, we try dividing 396,699,457 by 3:
396,699,457 ÷ 3 = 132,233,152.3333
If the quotient is a whole number, then 3 and 132,233,152.3333 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 | 396,699,457 | |
| -1 | -396,699,457 |
Let's try dividing by 4:
396,699,457 ÷ 4 = 99,174,864.25
If the quotient is a whole number, then 4 and 99,174,864.25 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 | 396,699,457 | |
| -1 | 396,699,457 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 163 | 1,141 | 1,793 | 12,551 | 31,607 | 221,249 | 347,677 | 2,433,739 | 5,151,941 | 36,063,587 | 56,671,351 | 396,699,457 |
| -1 | -7 | -11 | -77 | -163 | -1,141 | -1,793 | -12,551 | -31,607 | -221,249 | -347,677 | -2,433,739 | -5,151,941 | -36,063,587 | -56,671,351 | -396,699,457 |
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