A:
Positive:
1 x 1210330317 x 1729043337 x 3271163259 x 467309313 x 3866871493 x 810672191 x 5524110451 x 11581
Negative:
-1 x -121033031-7 x -17290433-37 x -3271163-259 x -467309-313 x -386687-1493 x -81067-2191 x -55241-10451 x -11581
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 121,033,031, 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 | 121,033,031 | |
| -1 | -121,033,031 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,033,031.
Example:
1 x 121,033,031 = 121,033,031
and
-1 x -121,033,031 = 121,033,031
Notice both answers equal 121,033,031
With that explanation out of the way, let's continue. Next, we take the number 121,033,031 and divide it by 2:
121,033,031 ÷ 2 = 60,516,515.5
If the quotient is a whole number, then 2 and 60,516,515.5 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 | 121,033,031 | |
| -1 | -121,033,031 |
Now, we try dividing 121,033,031 by 3:
121,033,031 ÷ 3 = 40,344,343.6667
If the quotient is a whole number, then 3 and 40,344,343.6667 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 | 121,033,031 | |
| -1 | -121,033,031 |
Let's try dividing by 4:
121,033,031 ÷ 4 = 30,258,257.75
If the quotient is a whole number, then 4 and 30,258,257.75 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 | 121,033,031 | |
| -1 | 121,033,031 |
If you did it right, you will end up with this table:
| 1 | 7 | 37 | 259 | 313 | 1,493 | 2,191 | 10,451 | 11,581 | 55,241 | 81,067 | 386,687 | 467,309 | 3,271,163 | 17,290,433 | 121,033,031 |
| -1 | -7 | -37 | -259 | -313 | -1,493 | -2,191 | -10,451 | -11,581 | -55,241 | -81,067 | -386,687 | -467,309 | -3,271,163 | -17,290,433 | -121,033,031 |
Here are some more numbers to try:
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