A:
Positive:
1 x 3313321255 x 6626642517 x 1949012525 x 1325328585 x 3898025125 x 2650657425 x 7796052125 x 155921
Negative:
-1 x -331332125-5 x -66266425-17 x -19490125-25 x -13253285-85 x -3898025-125 x -2650657-425 x -779605-2125 x -155921
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 331,332,125, 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 | 331,332,125 | |
| -1 | -331,332,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 331,332,125.
Example:
1 x 331,332,125 = 331,332,125
and
-1 x -331,332,125 = 331,332,125
Notice both answers equal 331,332,125
With that explanation out of the way, let's continue. Next, we take the number 331,332,125 and divide it by 2:
331,332,125 ÷ 2 = 165,666,062.5
If the quotient is a whole number, then 2 and 165,666,062.5 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 | 331,332,125 | |
| -1 | -331,332,125 |
Now, we try dividing 331,332,125 by 3:
331,332,125 ÷ 3 = 110,444,041.6667
If the quotient is a whole number, then 3 and 110,444,041.6667 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 | 331,332,125 | |
| -1 | -331,332,125 |
Let's try dividing by 4:
331,332,125 ÷ 4 = 82,833,031.25
If the quotient is a whole number, then 4 and 82,833,031.25 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 | 331,332,125 | |
| -1 | 331,332,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 25 | 85 | 125 | 425 | 2,125 | 155,921 | 779,605 | 2,650,657 | 3,898,025 | 13,253,285 | 19,490,125 | 66,266,425 | 331,332,125 |
| -1 | -5 | -17 | -25 | -85 | -125 | -425 | -2,125 | -155,921 | -779,605 | -2,650,657 | -3,898,025 | -13,253,285 | -19,490,125 | -66,266,425 | -331,332,125 |
Here are some more numbers to try:
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