A:
Positive:
1 x 125023155 x 25004637 x 178604535 x 357209523 x 23905683 x 183052615 x 47813415 x 3661
Negative:
-1 x -12502315-5 x -2500463-7 x -1786045-35 x -357209-523 x -23905-683 x -18305-2615 x -4781-3415 x -3661
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 12,502,315, 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 | 12,502,315 | |
| -1 | -12,502,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,502,315.
Example:
1 x 12,502,315 = 12,502,315
and
-1 x -12,502,315 = 12,502,315
Notice both answers equal 12,502,315
With that explanation out of the way, let's continue. Next, we take the number 12,502,315 and divide it by 2:
12,502,315 ÷ 2 = 6,251,157.5
If the quotient is a whole number, then 2 and 6,251,157.5 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 | 12,502,315 | |
| -1 | -12,502,315 |
Now, we try dividing 12,502,315 by 3:
12,502,315 ÷ 3 = 4,167,438.3333
If the quotient is a whole number, then 3 and 4,167,438.3333 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 | 12,502,315 | |
| -1 | -12,502,315 |
Let's try dividing by 4:
12,502,315 ÷ 4 = 3,125,578.75
If the quotient is a whole number, then 4 and 3,125,578.75 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 | 12,502,315 | |
| -1 | 12,502,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 523 | 683 | 2,615 | 3,415 | 3,661 | 4,781 | 18,305 | 23,905 | 357,209 | 1,786,045 | 2,500,463 | 12,502,315 |
| -1 | -5 | -7 | -35 | -523 | -683 | -2,615 | -3,415 | -3,661 | -4,781 | -18,305 | -23,905 | -357,209 | -1,786,045 | -2,500,463 | -12,502,315 |
Here are some more numbers to try:
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