A:
Positive:
1 x 317024897 x 452892713 x 243865391 x 348379113 x 280553791 x 400791469 x 215813083 x 10283
Negative:
-1 x -31702489-7 x -4528927-13 x -2438653-91 x -348379-113 x -280553-791 x -40079-1469 x -21581-3083 x -10283
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 31,702,489, 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 | 31,702,489 | |
| -1 | -31,702,489 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,702,489.
Example:
1 x 31,702,489 = 31,702,489
and
-1 x -31,702,489 = 31,702,489
Notice both answers equal 31,702,489
With that explanation out of the way, let's continue. Next, we take the number 31,702,489 and divide it by 2:
31,702,489 ÷ 2 = 15,851,244.5
If the quotient is a whole number, then 2 and 15,851,244.5 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 | 31,702,489 | |
| -1 | -31,702,489 |
Now, we try dividing 31,702,489 by 3:
31,702,489 ÷ 3 = 10,567,496.3333
If the quotient is a whole number, then 3 and 10,567,496.3333 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 | 31,702,489 | |
| -1 | -31,702,489 |
Let's try dividing by 4:
31,702,489 ÷ 4 = 7,925,622.25
If the quotient is a whole number, then 4 and 7,925,622.25 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 | 31,702,489 | |
| -1 | 31,702,489 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 113 | 791 | 1,469 | 3,083 | 10,283 | 21,581 | 40,079 | 280,553 | 348,379 | 2,438,653 | 4,528,927 | 31,702,489 |
| -1 | -7 | -13 | -91 | -113 | -791 | -1,469 | -3,083 | -10,283 | -21,581 | -40,079 | -280,553 | -348,379 | -2,438,653 | -4,528,927 | -31,702,489 |
Here are some more numbers to try:
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