A:
Positive:
1 x 1315403155 x 26308063251 x 524065281 x 468115373 x 3526551255 x 1048131405 x 936231865 x 70531
Negative:
-1 x -131540315-5 x -26308063-251 x -524065-281 x -468115-373 x -352655-1255 x -104813-1405 x -93623-1865 x -70531
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 131,540,315, 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 | 131,540,315 | |
| -1 | -131,540,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 131,540,315.
Example:
1 x 131,540,315 = 131,540,315
and
-1 x -131,540,315 = 131,540,315
Notice both answers equal 131,540,315
With that explanation out of the way, let's continue. Next, we take the number 131,540,315 and divide it by 2:
131,540,315 ÷ 2 = 65,770,157.5
If the quotient is a whole number, then 2 and 65,770,157.5 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 | 131,540,315 | |
| -1 | -131,540,315 |
Now, we try dividing 131,540,315 by 3:
131,540,315 ÷ 3 = 43,846,771.6667
If the quotient is a whole number, then 3 and 43,846,771.6667 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 | 131,540,315 | |
| -1 | -131,540,315 |
Let's try dividing by 4:
131,540,315 ÷ 4 = 32,885,078.75
If the quotient is a whole number, then 4 and 32,885,078.75 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 | 131,540,315 | |
| -1 | 131,540,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 251 | 281 | 373 | 1,255 | 1,405 | 1,865 | 70,531 | 93,623 | 104,813 | 352,655 | 468,115 | 524,065 | 26,308,063 | 131,540,315 |
| -1 | -5 | -251 | -281 | -373 | -1,255 | -1,405 | -1,865 | -70,531 | -93,623 | -104,813 | -352,655 | -468,115 | -524,065 | -26,308,063 | -131,540,315 |
Here are some more numbers to try:
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