A:
Positive:
1 x 1155201055 x 2310402131 x 372645537 x 3122165155 x 745291185 x 6244331147 x 1007155735 x 20143
Negative:
-1 x -115520105-5 x -23104021-31 x -3726455-37 x -3122165-155 x -745291-185 x -624433-1147 x -100715-5735 x -20143
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 115,520,105, 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 | 115,520,105 | |
| -1 | -115,520,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 115,520,105.
Example:
1 x 115,520,105 = 115,520,105
and
-1 x -115,520,105 = 115,520,105
Notice both answers equal 115,520,105
With that explanation out of the way, let's continue. Next, we take the number 115,520,105 and divide it by 2:
115,520,105 ÷ 2 = 57,760,052.5
If the quotient is a whole number, then 2 and 57,760,052.5 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 | 115,520,105 | |
| -1 | -115,520,105 |
Now, we try dividing 115,520,105 by 3:
115,520,105 ÷ 3 = 38,506,701.6667
If the quotient is a whole number, then 3 and 38,506,701.6667 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 | 115,520,105 | |
| -1 | -115,520,105 |
Let's try dividing by 4:
115,520,105 ÷ 4 = 28,880,026.25
If the quotient is a whole number, then 4 and 28,880,026.25 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 | 115,520,105 | |
| -1 | 115,520,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 37 | 155 | 185 | 1,147 | 5,735 | 20,143 | 100,715 | 624,433 | 745,291 | 3,122,165 | 3,726,455 | 23,104,021 | 115,520,105 |
| -1 | -5 | -31 | -37 | -155 | -185 | -1,147 | -5,735 | -20,143 | -100,715 | -624,433 | -745,291 | -3,122,165 | -3,726,455 | -23,104,021 | -115,520,105 |
Here are some more numbers to try:
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