A:
Positive:
1 x 12153100713 x 934853983 x 1464229163 x 745589691 x 1758771079 x 1126332119 x 573538983 x 13529
Negative:
-1 x -121531007-13 x -9348539-83 x -1464229-163 x -745589-691 x -175877-1079 x -112633-2119 x -57353-8983 x -13529
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 121,531,007, 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 | 121,531,007 | |
| -1 | -121,531,007 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,531,007.
Example:
1 x 121,531,007 = 121,531,007
and
-1 x -121,531,007 = 121,531,007
Notice both answers equal 121,531,007
With that explanation out of the way, let's continue. Next, we take the number 121,531,007 and divide it by 2:
121,531,007 ÷ 2 = 60,765,503.5
If the quotient is a whole number, then 2 and 60,765,503.5 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 | 121,531,007 | |
| -1 | -121,531,007 |
Now, we try dividing 121,531,007 by 3:
121,531,007 ÷ 3 = 40,510,335.6667
If the quotient is a whole number, then 3 and 40,510,335.6667 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 | 121,531,007 | |
| -1 | -121,531,007 |
Let's try dividing by 4:
121,531,007 ÷ 4 = 30,382,751.75
If the quotient is a whole number, then 4 and 30,382,751.75 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 | 121,531,007 | |
| -1 | 121,531,007 |
If you did it right, you will end up with this table:
| 1 | 13 | 83 | 163 | 691 | 1,079 | 2,119 | 8,983 | 13,529 | 57,353 | 112,633 | 175,877 | 745,589 | 1,464,229 | 9,348,539 | 121,531,007 |
| -1 | -13 | -83 | -163 | -691 | -1,079 | -2,119 | -8,983 | -13,529 | -57,353 | -112,633 | -175,877 | -745,589 | -1,464,229 | -9,348,539 | -121,531,007 |
Here are some more numbers to try:
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