A:
Positive:
1 x 1200677177 x 1715253111 x 1091524777 x 155932183 x 1446599581 x 206657913 x 1315096391 x 18787
Negative:
-1 x -120067717-7 x -17152531-11 x -10915247-77 x -1559321-83 x -1446599-581 x -206657-913 x -131509-6391 x -18787
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 120,067,717, 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 | 120,067,717 | |
| -1 | -120,067,717 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,067,717.
Example:
1 x 120,067,717 = 120,067,717
and
-1 x -120,067,717 = 120,067,717
Notice both answers equal 120,067,717
With that explanation out of the way, let's continue. Next, we take the number 120,067,717 and divide it by 2:
120,067,717 ÷ 2 = 60,033,858.5
If the quotient is a whole number, then 2 and 60,033,858.5 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 | 120,067,717 | |
| -1 | -120,067,717 |
Now, we try dividing 120,067,717 by 3:
120,067,717 ÷ 3 = 40,022,572.3333
If the quotient is a whole number, then 3 and 40,022,572.3333 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 | 120,067,717 | |
| -1 | -120,067,717 |
Let's try dividing by 4:
120,067,717 ÷ 4 = 30,016,929.25
If the quotient is a whole number, then 4 and 30,016,929.25 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 | 120,067,717 | |
| -1 | 120,067,717 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 83 | 581 | 913 | 6,391 | 18,787 | 131,509 | 206,657 | 1,446,599 | 1,559,321 | 10,915,247 | 17,152,531 | 120,067,717 |
| -1 | -7 | -11 | -77 | -83 | -581 | -913 | -6,391 | -18,787 | -131,509 | -206,657 | -1,446,599 | -1,559,321 | -10,915,247 | -17,152,531 | -120,067,717 |
Here are some more numbers to try:
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