A:
Positive:
1 x 3133144311 x 284831313 x 2410111143 x 219101151 x 2074931451 x 215931661 x 188631963 x 15961
Negative:
-1 x -31331443-11 x -2848313-13 x -2410111-143 x -219101-151 x -207493-1451 x -21593-1661 x -18863-1963 x -15961
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 31,331,443, 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 | 31,331,443 | |
| -1 | -31,331,443 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,331,443.
Example:
1 x 31,331,443 = 31,331,443
and
-1 x -31,331,443 = 31,331,443
Notice both answers equal 31,331,443
With that explanation out of the way, let's continue. Next, we take the number 31,331,443 and divide it by 2:
31,331,443 ÷ 2 = 15,665,721.5
If the quotient is a whole number, then 2 and 15,665,721.5 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 | 31,331,443 | |
| -1 | -31,331,443 |
Now, we try dividing 31,331,443 by 3:
31,331,443 ÷ 3 = 10,443,814.3333
If the quotient is a whole number, then 3 and 10,443,814.3333 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 | 31,331,443 | |
| -1 | -31,331,443 |
Let's try dividing by 4:
31,331,443 ÷ 4 = 7,832,860.75
If the quotient is a whole number, then 4 and 7,832,860.75 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 | 31,331,443 | |
| -1 | 31,331,443 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 151 | 1,451 | 1,661 | 1,963 | 15,961 | 18,863 | 21,593 | 207,493 | 219,101 | 2,410,111 | 2,848,313 | 31,331,443 |
| -1 | -11 | -13 | -143 | -151 | -1,451 | -1,661 | -1,963 | -15,961 | -18,863 | -21,593 | -207,493 | -219,101 | -2,410,111 | -2,848,313 | -31,331,443 |
Here are some more numbers to try:
Try the factor calculator