A:
Positive:
1 x 1205243155 x 2410486319 x 634338559 x 204278595 x 1268677295 x 4085571121 x 1075155605 x 21503
Negative:
-1 x -120524315-5 x -24104863-19 x -6343385-59 x -2042785-95 x -1268677-295 x -408557-1121 x -107515-5605 x -21503
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 120,524,315, 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 | 120,524,315 | |
| -1 | -120,524,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,524,315.
Example:
1 x 120,524,315 = 120,524,315
and
-1 x -120,524,315 = 120,524,315
Notice both answers equal 120,524,315
With that explanation out of the way, let's continue. Next, we take the number 120,524,315 and divide it by 2:
120,524,315 ÷ 2 = 60,262,157.5
If the quotient is a whole number, then 2 and 60,262,157.5 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 | 120,524,315 | |
| -1 | -120,524,315 |
Now, we try dividing 120,524,315 by 3:
120,524,315 ÷ 3 = 40,174,771.6667
If the quotient is a whole number, then 3 and 40,174,771.6667 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 | 120,524,315 | |
| -1 | -120,524,315 |
Let's try dividing by 4:
120,524,315 ÷ 4 = 30,131,078.75
If the quotient is a whole number, then 4 and 30,131,078.75 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 | 120,524,315 | |
| -1 | 120,524,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 59 | 95 | 295 | 1,121 | 5,605 | 21,503 | 107,515 | 408,557 | 1,268,677 | 2,042,785 | 6,343,385 | 24,104,863 | 120,524,315 |
| -1 | -5 | -19 | -59 | -95 | -295 | -1,121 | -5,605 | -21,503 | -107,515 | -408,557 | -1,268,677 | -2,042,785 | -6,343,385 | -24,104,863 | -120,524,315 |
Here are some more numbers to try:
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