A:
Positive:
1 x 1152120137 x 1645885989 x 1294517101 x 1140713623 x 184931707 x 1629591831 x 629238989 x 12817
Negative:
-1 x -115212013-7 x -16458859-89 x -1294517-101 x -1140713-623 x -184931-707 x -162959-1831 x -62923-8989 x -12817
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 115,212,013, 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 | 115,212,013 | |
| -1 | -115,212,013 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 115,212,013.
Example:
1 x 115,212,013 = 115,212,013
and
-1 x -115,212,013 = 115,212,013
Notice both answers equal 115,212,013
With that explanation out of the way, let's continue. Next, we take the number 115,212,013 and divide it by 2:
115,212,013 ÷ 2 = 57,606,006.5
If the quotient is a whole number, then 2 and 57,606,006.5 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 | 115,212,013 | |
| -1 | -115,212,013 |
Now, we try dividing 115,212,013 by 3:
115,212,013 ÷ 3 = 38,404,004.3333
If the quotient is a whole number, then 3 and 38,404,004.3333 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 | 115,212,013 | |
| -1 | -115,212,013 |
Let's try dividing by 4:
115,212,013 ÷ 4 = 28,803,003.25
If the quotient is a whole number, then 4 and 28,803,003.25 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 | 115,212,013 | |
| -1 | 115,212,013 |
If you did it right, you will end up with this table:
| 1 | 7 | 89 | 101 | 623 | 707 | 1,831 | 8,989 | 12,817 | 62,923 | 162,959 | 184,931 | 1,140,713 | 1,294,517 | 16,458,859 | 115,212,013 |
| -1 | -7 | -89 | -101 | -623 | -707 | -1,831 | -8,989 | -12,817 | -62,923 | -162,959 | -184,931 | -1,140,713 | -1,294,517 | -16,458,859 | -115,212,013 |
Here are some more numbers to try:
Try the factor calculator