A:
Positive:
1 x 3275132155 x 6550264323 x 14239705115 x 2847941557 x 5879952785 x 1175995113 x 6405512811 x 25565
Negative:
-1 x -327513215-5 x -65502643-23 x -14239705-115 x -2847941-557 x -587995-2785 x -117599-5113 x -64055-12811 x -25565
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 327,513,215, 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 | 327,513,215 | |
| -1 | -327,513,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 327,513,215.
Example:
1 x 327,513,215 = 327,513,215
and
-1 x -327,513,215 = 327,513,215
Notice both answers equal 327,513,215
With that explanation out of the way, let's continue. Next, we take the number 327,513,215 and divide it by 2:
327,513,215 ÷ 2 = 163,756,607.5
If the quotient is a whole number, then 2 and 163,756,607.5 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 | 327,513,215 | |
| -1 | -327,513,215 |
Now, we try dividing 327,513,215 by 3:
327,513,215 ÷ 3 = 109,171,071.6667
If the quotient is a whole number, then 3 and 109,171,071.6667 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 | 327,513,215 | |
| -1 | -327,513,215 |
Let's try dividing by 4:
327,513,215 ÷ 4 = 81,878,303.75
If the quotient is a whole number, then 4 and 81,878,303.75 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 | 327,513,215 | |
| -1 | 327,513,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 557 | 2,785 | 5,113 | 12,811 | 25,565 | 64,055 | 117,599 | 587,995 | 2,847,941 | 14,239,705 | 65,502,643 | 327,513,215 |
| -1 | -5 | -23 | -115 | -557 | -2,785 | -5,113 | -12,811 | -25,565 | -64,055 | -117,599 | -587,995 | -2,847,941 | -14,239,705 | -65,502,643 | -327,513,215 |
Here are some more numbers to try:
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