A:
Positive:
1 x 11551666113 x 888589783 x 1391767151 x 765011709 x 1629291079 x 1070591963 x 588479217 x 12533
Negative:
-1 x -115516661-13 x -8885897-83 x -1391767-151 x -765011-709 x -162929-1079 x -107059-1963 x -58847-9217 x -12533
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 115,516,661, 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 | 115,516,661 | |
| -1 | -115,516,661 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 115,516,661.
Example:
1 x 115,516,661 = 115,516,661
and
-1 x -115,516,661 = 115,516,661
Notice both answers equal 115,516,661
With that explanation out of the way, let's continue. Next, we take the number 115,516,661 and divide it by 2:
115,516,661 ÷ 2 = 57,758,330.5
If the quotient is a whole number, then 2 and 57,758,330.5 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 | 115,516,661 | |
| -1 | -115,516,661 |
Now, we try dividing 115,516,661 by 3:
115,516,661 ÷ 3 = 38,505,553.6667
If the quotient is a whole number, then 3 and 38,505,553.6667 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 | 115,516,661 | |
| -1 | -115,516,661 |
Let's try dividing by 4:
115,516,661 ÷ 4 = 28,879,165.25
If the quotient is a whole number, then 4 and 28,879,165.25 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 | 115,516,661 | |
| -1 | 115,516,661 |
If you did it right, you will end up with this table:
| 1 | 13 | 83 | 151 | 709 | 1,079 | 1,963 | 9,217 | 12,533 | 58,847 | 107,059 | 162,929 | 765,011 | 1,391,767 | 8,885,897 | 115,516,661 |
| -1 | -13 | -83 | -151 | -709 | -1,079 | -1,963 | -9,217 | -12,533 | -58,847 | -107,059 | -162,929 | -765,011 | -1,391,767 | -8,885,897 | -115,516,661 |
Here are some more numbers to try:
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