A:
Positive:
1 x 127913755 x 255827525 x 51165531 x 412625125 x 102331155 x 82525775 x 165053301 x 3875
Negative:
-1 x -12791375-5 x -2558275-25 x -511655-31 x -412625-125 x -102331-155 x -82525-775 x -16505-3301 x -3875
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 12,791,375, 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 | 12,791,375 | |
| -1 | -12,791,375 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,791,375.
Example:
1 x 12,791,375 = 12,791,375
and
-1 x -12,791,375 = 12,791,375
Notice both answers equal 12,791,375
With that explanation out of the way, let's continue. Next, we take the number 12,791,375 and divide it by 2:
12,791,375 ÷ 2 = 6,395,687.5
If the quotient is a whole number, then 2 and 6,395,687.5 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 | 12,791,375 | |
| -1 | -12,791,375 |
Now, we try dividing 12,791,375 by 3:
12,791,375 ÷ 3 = 4,263,791.6667
If the quotient is a whole number, then 3 and 4,263,791.6667 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 | 12,791,375 | |
| -1 | -12,791,375 |
Let's try dividing by 4:
12,791,375 ÷ 4 = 3,197,843.75
If the quotient is a whole number, then 4 and 3,197,843.75 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 | 12,791,375 | |
| -1 | 12,791,375 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 31 | 125 | 155 | 775 | 3,301 | 3,875 | 16,505 | 82,525 | 102,331 | 412,625 | 511,655 | 2,558,275 | 12,791,375 |
| -1 | -5 | -25 | -31 | -125 | -155 | -775 | -3,301 | -3,875 | -16,505 | -82,525 | -102,331 | -412,625 | -511,655 | -2,558,275 | -12,791,375 |
Here are some more numbers to try:
Try the factor calculator