A:
Positive:
1 x 317314255 x 634628511 x 288467519 x 167007525 x 126925755 x 57693595 x 334015209 x 151825275 x 115387475 x 668031045 x 303655225 x 6073
Negative:
-1 x -31731425-5 x -6346285-11 x -2884675-19 x -1670075-25 x -1269257-55 x -576935-95 x -334015-209 x -151825-275 x -115387-475 x -66803-1045 x -30365-5225 x -6073
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 31,731,425, 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 | 31,731,425 | |
| -1 | -31,731,425 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,731,425.
Example:
1 x 31,731,425 = 31,731,425
and
-1 x -31,731,425 = 31,731,425
Notice both answers equal 31,731,425
With that explanation out of the way, let's continue. Next, we take the number 31,731,425 and divide it by 2:
31,731,425 ÷ 2 = 15,865,712.5
If the quotient is a whole number, then 2 and 15,865,712.5 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 | 31,731,425 | |
| -1 | -31,731,425 |
Now, we try dividing 31,731,425 by 3:
31,731,425 ÷ 3 = 10,577,141.6667
If the quotient is a whole number, then 3 and 10,577,141.6667 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 | 31,731,425 | |
| -1 | -31,731,425 |
Let's try dividing by 4:
31,731,425 ÷ 4 = 7,932,856.25
If the quotient is a whole number, then 4 and 7,932,856.25 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 | 31,731,425 | |
| -1 | 31,731,425 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 19 | 25 | 55 | 95 | 209 | 275 | 475 | 1,045 | 5,225 | 6,073 | 30,365 | 66,803 | 115,387 | 151,825 | 334,015 | 576,935 | 1,269,257 | 1,670,075 | 2,884,675 | 6,346,285 | 31,731,425 |
| -1 | -5 | -11 | -19 | -25 | -55 | -95 | -209 | -275 | -475 | -1,045 | -5,225 | -6,073 | -30,365 | -66,803 | -115,387 | -151,825 | -334,015 | -576,935 | -1,269,257 | -1,670,075 | -2,884,675 | -6,346,285 | -31,731,425 |
Here are some more numbers to try:
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