A:
Positive:
1 x 8250931317 x 485348971 x 1162103197 x 418829347 x 2377791207 x 683593349 x 246375899 x 13987
Negative:
-1 x -82509313-17 x -4853489-71 x -1162103-197 x -418829-347 x -237779-1207 x -68359-3349 x -24637-5899 x -13987
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 82,509,313, 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 | 82,509,313 | |
| -1 | -82,509,313 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 82,509,313.
Example:
1 x 82,509,313 = 82,509,313
and
-1 x -82,509,313 = 82,509,313
Notice both answers equal 82,509,313
With that explanation out of the way, let's continue. Next, we take the number 82,509,313 and divide it by 2:
82,509,313 ÷ 2 = 41,254,656.5
If the quotient is a whole number, then 2 and 41,254,656.5 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 | 82,509,313 | |
| -1 | -82,509,313 |
Now, we try dividing 82,509,313 by 3:
82,509,313 ÷ 3 = 27,503,104.3333
If the quotient is a whole number, then 3 and 27,503,104.3333 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 | 82,509,313 | |
| -1 | -82,509,313 |
Let's try dividing by 4:
82,509,313 ÷ 4 = 20,627,328.25
If the quotient is a whole number, then 4 and 20,627,328.25 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 | 82,509,313 | |
| -1 | 82,509,313 |
If you did it right, you will end up with this table:
| 1 | 17 | 71 | 197 | 347 | 1,207 | 3,349 | 5,899 | 13,987 | 24,637 | 68,359 | 237,779 | 418,829 | 1,162,103 | 4,853,489 | 82,509,313 |
| -1 | -17 | -71 | -197 | -347 | -1,207 | -3,349 | -5,899 | -13,987 | -24,637 | -68,359 | -237,779 | -418,829 | -1,162,103 | -4,853,489 | -82,509,313 |
Here are some more numbers to try:
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