A:
Positive:
1 x 129303797 x 184719711 x 117548931 x 41710977 x 167927217 x 59587341 x 379192387 x 5417
Negative:
-1 x -12930379-7 x -1847197-11 x -1175489-31 x -417109-77 x -167927-217 x -59587-341 x -37919-2387 x -5417
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 12,930,379, 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 | 12,930,379 | |
| -1 | -12,930,379 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,930,379.
Example:
1 x 12,930,379 = 12,930,379
and
-1 x -12,930,379 = 12,930,379
Notice both answers equal 12,930,379
With that explanation out of the way, let's continue. Next, we take the number 12,930,379 and divide it by 2:
12,930,379 ÷ 2 = 6,465,189.5
If the quotient is a whole number, then 2 and 6,465,189.5 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 | 12,930,379 | |
| -1 | -12,930,379 |
Now, we try dividing 12,930,379 by 3:
12,930,379 ÷ 3 = 4,310,126.3333
If the quotient is a whole number, then 3 and 4,310,126.3333 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 | 12,930,379 | |
| -1 | -12,930,379 |
Let's try dividing by 4:
12,930,379 ÷ 4 = 3,232,594.75
If the quotient is a whole number, then 4 and 3,232,594.75 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 | 12,930,379 | |
| -1 | 12,930,379 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 31 | 77 | 217 | 341 | 2,387 | 5,417 | 37,919 | 59,587 | 167,927 | 417,109 | 1,175,489 | 1,847,197 | 12,930,379 |
| -1 | -7 | -11 | -31 | -77 | -217 | -341 | -2,387 | -5,417 | -37,919 | -59,587 | -167,927 | -417,109 | -1,175,489 | -1,847,197 | -12,930,379 |
Here are some more numbers to try:
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