A:
Positive:
1 x 31152555 x 62305111 x 28320513 x 23963555 x 5664165 x 47927143 x 21785715 x 4357
Negative:
-1 x -3115255-5 x -623051-11 x -283205-13 x -239635-55 x -56641-65 x -47927-143 x -21785-715 x -4357
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 3,115,255, 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 | 3,115,255 | |
| -1 | -3,115,255 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,115,255.
Example:
1 x 3,115,255 = 3,115,255
and
-1 x -3,115,255 = 3,115,255
Notice both answers equal 3,115,255
With that explanation out of the way, let's continue. Next, we take the number 3,115,255 and divide it by 2:
3,115,255 ÷ 2 = 1,557,627.5
If the quotient is a whole number, then 2 and 1,557,627.5 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 | 3,115,255 | |
| -1 | -3,115,255 |
Now, we try dividing 3,115,255 by 3:
3,115,255 ÷ 3 = 1,038,418.3333
If the quotient is a whole number, then 3 and 1,038,418.3333 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 | 3,115,255 | |
| -1 | -3,115,255 |
Let's try dividing by 4:
3,115,255 ÷ 4 = 778,813.75
If the quotient is a whole number, then 4 and 778,813.75 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 | 3,115,255 | |
| -1 | 3,115,255 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 13 | 55 | 65 | 143 | 715 | 4,357 | 21,785 | 47,927 | 56,641 | 239,635 | 283,205 | 623,051 | 3,115,255 |
| -1 | -5 | -11 | -13 | -55 | -65 | -143 | -715 | -4,357 | -21,785 | -47,927 | -56,641 | -239,635 | -283,205 | -623,051 | -3,115,255 |
Here are some more numbers to try:
Try the factor calculator