A:
Positive:
1 x 131164255 x 26232857 x 187377525 x 52465735 x 374755175 x 74951241 x 54425311 x 421751205 x 108851555 x 84351687 x 77752177 x 6025
Negative:
-1 x -13116425-5 x -2623285-7 x -1873775-25 x -524657-35 x -374755-175 x -74951-241 x -54425-311 x -42175-1205 x -10885-1555 x -8435-1687 x -7775-2177 x -6025
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 13,116,425, 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 | 13,116,425 | |
| -1 | -13,116,425 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,116,425.
Example:
1 x 13,116,425 = 13,116,425
and
-1 x -13,116,425 = 13,116,425
Notice both answers equal 13,116,425
With that explanation out of the way, let's continue. Next, we take the number 13,116,425 and divide it by 2:
13,116,425 ÷ 2 = 6,558,212.5
If the quotient is a whole number, then 2 and 6,558,212.5 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 | 13,116,425 | |
| -1 | -13,116,425 |
Now, we try dividing 13,116,425 by 3:
13,116,425 ÷ 3 = 4,372,141.6667
If the quotient is a whole number, then 3 and 4,372,141.6667 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 | 13,116,425 | |
| -1 | -13,116,425 |
Let's try dividing by 4:
13,116,425 ÷ 4 = 3,279,106.25
If the quotient is a whole number, then 4 and 3,279,106.25 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 | 13,116,425 | |
| -1 | 13,116,425 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 175 | 241 | 311 | 1,205 | 1,555 | 1,687 | 2,177 | 6,025 | 7,775 | 8,435 | 10,885 | 42,175 | 54,425 | 74,951 | 374,755 | 524,657 | 1,873,775 | 2,623,285 | 13,116,425 |
| -1 | -5 | -7 | -25 | -35 | -175 | -241 | -311 | -1,205 | -1,555 | -1,687 | -2,177 | -6,025 | -7,775 | -8,435 | -10,885 | -42,175 | -54,425 | -74,951 | -374,755 | -524,657 | -1,873,775 | -2,623,285 | -13,116,425 |
Here are some more numbers to try:
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