A:
Positive:
1 x 312113355 x 624226743 x 725845179 x 174365215 x 145169811 x 38485895 x 348734055 x 7697
Negative:
-1 x -31211335-5 x -6242267-43 x -725845-179 x -174365-215 x -145169-811 x -38485-895 x -34873-4055 x -7697
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 31,211,335, 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 | 31,211,335 | |
| -1 | -31,211,335 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,211,335.
Example:
1 x 31,211,335 = 31,211,335
and
-1 x -31,211,335 = 31,211,335
Notice both answers equal 31,211,335
With that explanation out of the way, let's continue. Next, we take the number 31,211,335 and divide it by 2:
31,211,335 ÷ 2 = 15,605,667.5
If the quotient is a whole number, then 2 and 15,605,667.5 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 | 31,211,335 | |
| -1 | -31,211,335 |
Now, we try dividing 31,211,335 by 3:
31,211,335 ÷ 3 = 10,403,778.3333
If the quotient is a whole number, then 3 and 10,403,778.3333 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 | 31,211,335 | |
| -1 | -31,211,335 |
Let's try dividing by 4:
31,211,335 ÷ 4 = 7,802,833.75
If the quotient is a whole number, then 4 and 7,802,833.75 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 | 31,211,335 | |
| -1 | 31,211,335 |
If you did it right, you will end up with this table:
| 1 | 5 | 43 | 179 | 215 | 811 | 895 | 4,055 | 7,697 | 34,873 | 38,485 | 145,169 | 174,365 | 725,845 | 6,242,267 | 31,211,335 |
| -1 | -5 | -43 | -179 | -215 | -811 | -895 | -4,055 | -7,697 | -34,873 | -38,485 | -145,169 | -174,365 | -725,845 | -6,242,267 | -31,211,335 |
Here are some more numbers to try:
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