A:
Positive:
1 x 12012243111 x 1092022113 x 9240187101 x 1189331143 x 8400171111 x 1081211313 x 914878317 x 14443
Negative:
-1 x -120122431-11 x -10920221-13 x -9240187-101 x -1189331-143 x -840017-1111 x -108121-1313 x -91487-8317 x -14443
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 120,122,431, 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 | 120,122,431 | |
| -1 | -120,122,431 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,122,431.
Example:
1 x 120,122,431 = 120,122,431
and
-1 x -120,122,431 = 120,122,431
Notice both answers equal 120,122,431
With that explanation out of the way, let's continue. Next, we take the number 120,122,431 and divide it by 2:
120,122,431 ÷ 2 = 60,061,215.5
If the quotient is a whole number, then 2 and 60,061,215.5 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 | 120,122,431 | |
| -1 | -120,122,431 |
Now, we try dividing 120,122,431 by 3:
120,122,431 ÷ 3 = 40,040,810.3333
If the quotient is a whole number, then 3 and 40,040,810.3333 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 | 120,122,431 | |
| -1 | -120,122,431 |
Let's try dividing by 4:
120,122,431 ÷ 4 = 30,030,607.75
If the quotient is a whole number, then 4 and 30,030,607.75 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 | 120,122,431 | |
| -1 | 120,122,431 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 101 | 143 | 1,111 | 1,313 | 8,317 | 14,443 | 91,487 | 108,121 | 840,017 | 1,189,331 | 9,240,187 | 10,920,221 | 120,122,431 |
| -1 | -11 | -13 | -101 | -143 | -1,111 | -1,313 | -8,317 | -14,443 | -91,487 | -108,121 | -840,017 | -1,189,331 | -9,240,187 | -10,920,221 | -120,122,431 |
Here are some more numbers to try:
Try the factor calculator