A:
Positive:
1 x 125002577 x 178575111 x 113638767 x 18657177 x 162341469 x 26653737 x 169612423 x 5159
Negative:
-1 x -12500257-7 x -1785751-11 x -1136387-67 x -186571-77 x -162341-469 x -26653-737 x -16961-2423 x -5159
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 12,500,257, 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 | 12,500,257 | |
| -1 | -12,500,257 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,500,257.
Example:
1 x 12,500,257 = 12,500,257
and
-1 x -12,500,257 = 12,500,257
Notice both answers equal 12,500,257
With that explanation out of the way, let's continue. Next, we take the number 12,500,257 and divide it by 2:
12,500,257 ÷ 2 = 6,250,128.5
If the quotient is a whole number, then 2 and 6,250,128.5 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 | 12,500,257 | |
| -1 | -12,500,257 |
Now, we try dividing 12,500,257 by 3:
12,500,257 ÷ 3 = 4,166,752.3333
If the quotient is a whole number, then 3 and 4,166,752.3333 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 | 12,500,257 | |
| -1 | -12,500,257 |
Let's try dividing by 4:
12,500,257 ÷ 4 = 3,125,064.25
If the quotient is a whole number, then 4 and 3,125,064.25 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 | 12,500,257 | |
| -1 | 12,500,257 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 67 | 77 | 469 | 737 | 2,423 | 5,159 | 16,961 | 26,653 | 162,341 | 186,571 | 1,136,387 | 1,785,751 | 12,500,257 |
| -1 | -7 | -11 | -67 | -77 | -469 | -737 | -2,423 | -5,159 | -16,961 | -26,653 | -162,341 | -186,571 | -1,136,387 | -1,785,751 | -12,500,257 |
Here are some more numbers to try:
Try the factor calculator