A:
Positive:
1 x 13133013137 x 354946353 x 2477927193 x 680467347 x 3784731961 x 669717141 x 1839110229 x 12839
Negative:
-1 x -131330131-37 x -3549463-53 x -2477927-193 x -680467-347 x -378473-1961 x -66971-7141 x -18391-10229 x -12839
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 131,330,131, 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 | 131,330,131 | |
| -1 | -131,330,131 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 131,330,131.
Example:
1 x 131,330,131 = 131,330,131
and
-1 x -131,330,131 = 131,330,131
Notice both answers equal 131,330,131
With that explanation out of the way, let's continue. Next, we take the number 131,330,131 and divide it by 2:
131,330,131 ÷ 2 = 65,665,065.5
If the quotient is a whole number, then 2 and 65,665,065.5 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 | 131,330,131 | |
| -1 | -131,330,131 |
Now, we try dividing 131,330,131 by 3:
131,330,131 ÷ 3 = 43,776,710.3333
If the quotient is a whole number, then 3 and 43,776,710.3333 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 | 131,330,131 | |
| -1 | -131,330,131 |
Let's try dividing by 4:
131,330,131 ÷ 4 = 32,832,532.75
If the quotient is a whole number, then 4 and 32,832,532.75 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 | 131,330,131 | |
| -1 | 131,330,131 |
If you did it right, you will end up with this table:
| 1 | 37 | 53 | 193 | 347 | 1,961 | 7,141 | 10,229 | 12,839 | 18,391 | 66,971 | 378,473 | 680,467 | 2,477,927 | 3,549,463 | 131,330,131 |
| -1 | -37 | -53 | -193 | -347 | -1,961 | -7,141 | -10,229 | -12,839 | -18,391 | -66,971 | -378,473 | -680,467 | -2,477,927 | -3,549,463 | -131,330,131 |
Here are some more numbers to try:
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