A:
Positive:
1 x 3311054155 x 6622108337 x 8948795185 x 1789759383 x 8645051915 x 1729014673 x 7085514171 x 23365
Negative:
-1 x -331105415-5 x -66221083-37 x -8948795-185 x -1789759-383 x -864505-1915 x -172901-4673 x -70855-14171 x -23365
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 331,105,415, 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 | 331,105,415 | |
| -1 | -331,105,415 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 331,105,415.
Example:
1 x 331,105,415 = 331,105,415
and
-1 x -331,105,415 = 331,105,415
Notice both answers equal 331,105,415
With that explanation out of the way, let's continue. Next, we take the number 331,105,415 and divide it by 2:
331,105,415 ÷ 2 = 165,552,707.5
If the quotient is a whole number, then 2 and 165,552,707.5 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 | 331,105,415 | |
| -1 | -331,105,415 |
Now, we try dividing 331,105,415 by 3:
331,105,415 ÷ 3 = 110,368,471.6667
If the quotient is a whole number, then 3 and 110,368,471.6667 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 | 331,105,415 | |
| -1 | -331,105,415 |
Let's try dividing by 4:
331,105,415 ÷ 4 = 82,776,353.75
If the quotient is a whole number, then 4 and 82,776,353.75 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 | 331,105,415 | |
| -1 | 331,105,415 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 185 | 383 | 1,915 | 4,673 | 14,171 | 23,365 | 70,855 | 172,901 | 864,505 | 1,789,759 | 8,948,795 | 66,221,083 | 331,105,415 |
| -1 | -5 | -37 | -185 | -383 | -1,915 | -4,673 | -14,171 | -23,365 | -70,855 | -172,901 | -864,505 | -1,789,759 | -8,948,795 | -66,221,083 | -331,105,415 |
Here are some more numbers to try:
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