A:
Positive:
1 x 1313245155 x 262649037 x 1876064535 x 3752129241 x 5449151205 x 1089831687 x 778458435 x 15569
Negative:
-1 x -131324515-5 x -26264903-7 x -18760645-35 x -3752129-241 x -544915-1205 x -108983-1687 x -77845-8435 x -15569
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 131,324,515, 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 | 131,324,515 | |
| -1 | -131,324,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 131,324,515.
Example:
1 x 131,324,515 = 131,324,515
and
-1 x -131,324,515 = 131,324,515
Notice both answers equal 131,324,515
With that explanation out of the way, let's continue. Next, we take the number 131,324,515 and divide it by 2:
131,324,515 ÷ 2 = 65,662,257.5
If the quotient is a whole number, then 2 and 65,662,257.5 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 | 131,324,515 | |
| -1 | -131,324,515 |
Now, we try dividing 131,324,515 by 3:
131,324,515 ÷ 3 = 43,774,838.3333
If the quotient is a whole number, then 3 and 43,774,838.3333 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 | 131,324,515 | |
| -1 | -131,324,515 |
Let's try dividing by 4:
131,324,515 ÷ 4 = 32,831,128.75
If the quotient is a whole number, then 4 and 32,831,128.75 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 | 131,324,515 | |
| -1 | 131,324,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 241 | 1,205 | 1,687 | 8,435 | 15,569 | 77,845 | 108,983 | 544,915 | 3,752,129 | 18,760,645 | 26,264,903 | 131,324,515 |
| -1 | -5 | -7 | -35 | -241 | -1,205 | -1,687 | -8,435 | -15,569 | -77,845 | -108,983 | -544,915 | -3,752,129 | -18,760,645 | -26,264,903 | -131,324,515 |
Here are some more numbers to try:
Try the factor calculator