A:
Positive:
1 x 13131031111 x 1193730119 x 691106971 x 1849441209 x 628279781 x 1681311349 x 973398849 x 14839
Negative:
-1 x -131310311-11 x -11937301-19 x -6911069-71 x -1849441-209 x -628279-781 x -168131-1349 x -97339-8849 x -14839
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 131,310,311, 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 | 131,310,311 | |
| -1 | -131,310,311 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 131,310,311.
Example:
1 x 131,310,311 = 131,310,311
and
-1 x -131,310,311 = 131,310,311
Notice both answers equal 131,310,311
With that explanation out of the way, let's continue. Next, we take the number 131,310,311 and divide it by 2:
131,310,311 ÷ 2 = 65,655,155.5
If the quotient is a whole number, then 2 and 65,655,155.5 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 | 131,310,311 | |
| -1 | -131,310,311 |
Now, we try dividing 131,310,311 by 3:
131,310,311 ÷ 3 = 43,770,103.6667
If the quotient is a whole number, then 3 and 43,770,103.6667 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 | 131,310,311 | |
| -1 | -131,310,311 |
Let's try dividing by 4:
131,310,311 ÷ 4 = 32,827,577.75
If the quotient is a whole number, then 4 and 32,827,577.75 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 | 131,310,311 | |
| -1 | 131,310,311 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 71 | 209 | 781 | 1,349 | 8,849 | 14,839 | 97,339 | 168,131 | 628,279 | 1,849,441 | 6,911,069 | 11,937,301 | 131,310,311 |
| -1 | -11 | -19 | -71 | -209 | -781 | -1,349 | -8,849 | -14,839 | -97,339 | -168,131 | -628,279 | -1,849,441 | -6,911,069 | -11,937,301 | -131,310,311 |
Here are some more numbers to try:
Try the factor calculator