A:
Positive:
1 x 8650813129 x 298303943 x 2011817173 x 500047401 x 2157311247 x 693735017 x 172437439 x 11629
Negative:
-1 x -86508131-29 x -2983039-43 x -2011817-173 x -500047-401 x -215731-1247 x -69373-5017 x -17243-7439 x -11629
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 86,508,131, 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 | 86,508,131 | |
| -1 | -86,508,131 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 86,508,131.
Example:
1 x 86,508,131 = 86,508,131
and
-1 x -86,508,131 = 86,508,131
Notice both answers equal 86,508,131
With that explanation out of the way, let's continue. Next, we take the number 86,508,131 and divide it by 2:
86,508,131 ÷ 2 = 43,254,065.5
If the quotient is a whole number, then 2 and 43,254,065.5 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 | 86,508,131 | |
| -1 | -86,508,131 |
Now, we try dividing 86,508,131 by 3:
86,508,131 ÷ 3 = 28,836,043.6667
If the quotient is a whole number, then 3 and 28,836,043.6667 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 | 86,508,131 | |
| -1 | -86,508,131 |
Let's try dividing by 4:
86,508,131 ÷ 4 = 21,627,032.75
If the quotient is a whole number, then 4 and 21,627,032.75 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 | 86,508,131 | |
| -1 | 86,508,131 |
If you did it right, you will end up with this table:
| 1 | 29 | 43 | 173 | 401 | 1,247 | 5,017 | 7,439 | 11,629 | 17,243 | 69,373 | 215,731 | 500,047 | 2,011,817 | 2,983,039 | 86,508,131 |
| -1 | -29 | -43 | -173 | -401 | -1,247 | -5,017 | -7,439 | -11,629 | -17,243 | -69,373 | -215,731 | -500,047 | -2,011,817 | -2,983,039 | -86,508,131 |
Here are some more numbers to try:
Try the factor calculator