A:
Positive:
1 x 1091356217 x 1559080323 x 474502783 x 1314887161 x 677861581 x 1878411909 x 571698167 x 13363
Negative:
-1 x -109135621-7 x -15590803-23 x -4745027-83 x -1314887-161 x -677861-581 x -187841-1909 x -57169-8167 x -13363
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 109,135,621, 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 | 109,135,621 | |
| -1 | -109,135,621 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 109,135,621.
Example:
1 x 109,135,621 = 109,135,621
and
-1 x -109,135,621 = 109,135,621
Notice both answers equal 109,135,621
With that explanation out of the way, let's continue. Next, we take the number 109,135,621 and divide it by 2:
109,135,621 ÷ 2 = 54,567,810.5
If the quotient is a whole number, then 2 and 54,567,810.5 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 | 109,135,621 | |
| -1 | -109,135,621 |
Now, we try dividing 109,135,621 by 3:
109,135,621 ÷ 3 = 36,378,540.3333
If the quotient is a whole number, then 3 and 36,378,540.3333 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 | 109,135,621 | |
| -1 | -109,135,621 |
Let's try dividing by 4:
109,135,621 ÷ 4 = 27,283,905.25
If the quotient is a whole number, then 4 and 27,283,905.25 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 | 109,135,621 | |
| -1 | 109,135,621 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 83 | 161 | 581 | 1,909 | 8,167 | 13,363 | 57,169 | 187,841 | 677,861 | 1,314,887 | 4,745,027 | 15,590,803 | 109,135,621 |
| -1 | -7 | -23 | -83 | -161 | -581 | -1,909 | -8,167 | -13,363 | -57,169 | -187,841 | -677,861 | -1,314,887 | -4,745,027 | -15,590,803 | -109,135,621 |
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