A:
Positive:
1 x 12311655 x 24623313 x 9470531 x 3971547 x 2619565 x 18941155 x 7943169 x 7285235 x 5239403 x 3055611 x 2015845 x 1457
Negative:
-1 x -1231165-5 x -246233-13 x -94705-31 x -39715-47 x -26195-65 x -18941-155 x -7943-169 x -7285-235 x -5239-403 x -3055-611 x -2015-845 x -1457
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 1,231,165, 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 | 1,231,165 | |
| -1 | -1,231,165 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,231,165.
Example:
1 x 1,231,165 = 1,231,165
and
-1 x -1,231,165 = 1,231,165
Notice both answers equal 1,231,165
With that explanation out of the way, let's continue. Next, we take the number 1,231,165 and divide it by 2:
1,231,165 ÷ 2 = 615,582.5
If the quotient is a whole number, then 2 and 615,582.5 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 | 1,231,165 | |
| -1 | -1,231,165 |
Now, we try dividing 1,231,165 by 3:
1,231,165 ÷ 3 = 410,388.3333
If the quotient is a whole number, then 3 and 410,388.3333 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 | 1,231,165 | |
| -1 | -1,231,165 |
Let's try dividing by 4:
1,231,165 ÷ 4 = 307,791.25
If the quotient is a whole number, then 4 and 307,791.25 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 | 1,231,165 | |
| -1 | 1,231,165 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 31 | 47 | 65 | 155 | 169 | 235 | 403 | 611 | 845 | 1,457 | 2,015 | 3,055 | 5,239 | 7,285 | 7,943 | 18,941 | 26,195 | 39,715 | 94,705 | 246,233 | 1,231,165 |
| -1 | -5 | -13 | -31 | -47 | -65 | -155 | -169 | -235 | -403 | -611 | -845 | -1,457 | -2,015 | -3,055 | -5,239 | -7,285 | -7,943 | -18,941 | -26,195 | -39,715 | -94,705 | -246,233 | -1,231,165 |
Here are some more numbers to try:
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