A:
Positive:
1 x 3193970319 x 168103731 x 1030313211 x 151373257 x 124279589 x 542274009 x 79674883 x 6541
Negative:
-1 x -31939703-19 x -1681037-31 x -1030313-211 x -151373-257 x -124279-589 x -54227-4009 x -7967-4883 x -6541
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 31,939,703, 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 | 31,939,703 | |
| -1 | -31,939,703 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,939,703.
Example:
1 x 31,939,703 = 31,939,703
and
-1 x -31,939,703 = 31,939,703
Notice both answers equal 31,939,703
With that explanation out of the way, let's continue. Next, we take the number 31,939,703 and divide it by 2:
31,939,703 ÷ 2 = 15,969,851.5
If the quotient is a whole number, then 2 and 15,969,851.5 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 | 31,939,703 | |
| -1 | -31,939,703 |
Now, we try dividing 31,939,703 by 3:
31,939,703 ÷ 3 = 10,646,567.6667
If the quotient is a whole number, then 3 and 10,646,567.6667 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 | 31,939,703 | |
| -1 | -31,939,703 |
Let's try dividing by 4:
31,939,703 ÷ 4 = 7,984,925.75
If the quotient is a whole number, then 4 and 7,984,925.75 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 | 31,939,703 | |
| -1 | 31,939,703 |
If you did it right, you will end up with this table:
| 1 | 19 | 31 | 211 | 257 | 589 | 4,009 | 4,883 | 6,541 | 7,967 | 54,227 | 124,279 | 151,373 | 1,030,313 | 1,681,037 | 31,939,703 |
| -1 | -19 | -31 | -211 | -257 | -589 | -4,009 | -4,883 | -6,541 | -7,967 | -54,227 | -124,279 | -151,373 | -1,030,313 | -1,681,037 | -31,939,703 |
Here are some more numbers to try:
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