A:
Positive:
1 x 125121055 x 250242137 x 33816547 x 266215185 x 67633235 x 532431439 x 86951739 x 7195
Negative:
-1 x -12512105-5 x -2502421-37 x -338165-47 x -266215-185 x -67633-235 x -53243-1439 x -8695-1739 x -7195
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 12,512,105, 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 | 12,512,105 | |
| -1 | -12,512,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,512,105.
Example:
1 x 12,512,105 = 12,512,105
and
-1 x -12,512,105 = 12,512,105
Notice both answers equal 12,512,105
With that explanation out of the way, let's continue. Next, we take the number 12,512,105 and divide it by 2:
12,512,105 ÷ 2 = 6,256,052.5
If the quotient is a whole number, then 2 and 6,256,052.5 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 | 12,512,105 | |
| -1 | -12,512,105 |
Now, we try dividing 12,512,105 by 3:
12,512,105 ÷ 3 = 4,170,701.6667
If the quotient is a whole number, then 3 and 4,170,701.6667 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 | 12,512,105 | |
| -1 | -12,512,105 |
Let's try dividing by 4:
12,512,105 ÷ 4 = 3,128,026.25
If the quotient is a whole number, then 4 and 3,128,026.25 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 | 12,512,105 | |
| -1 | 12,512,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 47 | 185 | 235 | 1,439 | 1,739 | 7,195 | 8,695 | 53,243 | 67,633 | 266,215 | 338,165 | 2,502,421 | 12,512,105 |
| -1 | -5 | -37 | -47 | -185 | -235 | -1,439 | -1,739 | -7,195 | -8,695 | -53,243 | -67,633 | -266,215 | -338,165 | -2,502,421 | -12,512,105 |
Here are some more numbers to try:
Try the factor calculator