A:
Positive:
1 x 12070717113 x 928516719 x 635300971 x 1700101247 x 488693923 x 1307771349 x 894796883 x 17537
Negative:
-1 x -120707171-13 x -9285167-19 x -6353009-71 x -1700101-247 x -488693-923 x -130777-1349 x -89479-6883 x -17537
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 120,707,171, 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 | 120,707,171 | |
| -1 | -120,707,171 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,707,171.
Example:
1 x 120,707,171 = 120,707,171
and
-1 x -120,707,171 = 120,707,171
Notice both answers equal 120,707,171
With that explanation out of the way, let's continue. Next, we take the number 120,707,171 and divide it by 2:
120,707,171 ÷ 2 = 60,353,585.5
If the quotient is a whole number, then 2 and 60,353,585.5 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 | 120,707,171 | |
| -1 | -120,707,171 |
Now, we try dividing 120,707,171 by 3:
120,707,171 ÷ 3 = 40,235,723.6667
If the quotient is a whole number, then 3 and 40,235,723.6667 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 | 120,707,171 | |
| -1 | -120,707,171 |
Let's try dividing by 4:
120,707,171 ÷ 4 = 30,176,792.75
If the quotient is a whole number, then 4 and 30,176,792.75 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 | 120,707,171 | |
| -1 | 120,707,171 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 71 | 247 | 923 | 1,349 | 6,883 | 17,537 | 89,479 | 130,777 | 488,693 | 1,700,101 | 6,353,009 | 9,285,167 | 120,707,171 |
| -1 | -13 | -19 | -71 | -247 | -923 | -1,349 | -6,883 | -17,537 | -89,479 | -130,777 | -488,693 | -1,700,101 | -6,353,009 | -9,285,167 | -120,707,171 |
Here are some more numbers to try:
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