A:
Positive:
1 x 314251255 x 628502525 x 125700529 x 1083625125 x 251401145 x 216725725 x 433453625 x 8669
Negative:
-1 x -31425125-5 x -6285025-25 x -1257005-29 x -1083625-125 x -251401-145 x -216725-725 x -43345-3625 x -8669
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 31,425,125, 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 | 31,425,125 | |
| -1 | -31,425,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,425,125.
Example:
1 x 31,425,125 = 31,425,125
and
-1 x -31,425,125 = 31,425,125
Notice both answers equal 31,425,125
With that explanation out of the way, let's continue. Next, we take the number 31,425,125 and divide it by 2:
31,425,125 ÷ 2 = 15,712,562.5
If the quotient is a whole number, then 2 and 15,712,562.5 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 | 31,425,125 | |
| -1 | -31,425,125 |
Now, we try dividing 31,425,125 by 3:
31,425,125 ÷ 3 = 10,475,041.6667
If the quotient is a whole number, then 3 and 10,475,041.6667 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 | 31,425,125 | |
| -1 | -31,425,125 |
Let's try dividing by 4:
31,425,125 ÷ 4 = 7,856,281.25
If the quotient is a whole number, then 4 and 7,856,281.25 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 | 31,425,125 | |
| -1 | 31,425,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 29 | 125 | 145 | 725 | 3,625 | 8,669 | 43,345 | 216,725 | 251,401 | 1,083,625 | 1,257,005 | 6,285,025 | 31,425,125 |
| -1 | -5 | -25 | -29 | -125 | -145 | -725 | -3,625 | -8,669 | -43,345 | -216,725 | -251,401 | -1,083,625 | -1,257,005 | -6,285,025 | -31,425,125 |
Here are some more numbers to try:
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