A:
Positive:
1 x 1308187111 x 118926123 x 56877729 x 451099253 x 51707319 x 41009667 x 196131783 x 7337
Negative:
-1 x -13081871-11 x -1189261-23 x -568777-29 x -451099-253 x -51707-319 x -41009-667 x -19613-1783 x -7337
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 13,081,871, 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 | 13,081,871 | |
| -1 | -13,081,871 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,081,871.
Example:
1 x 13,081,871 = 13,081,871
and
-1 x -13,081,871 = 13,081,871
Notice both answers equal 13,081,871
With that explanation out of the way, let's continue. Next, we take the number 13,081,871 and divide it by 2:
13,081,871 ÷ 2 = 6,540,935.5
If the quotient is a whole number, then 2 and 6,540,935.5 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 | 13,081,871 | |
| -1 | -13,081,871 |
Now, we try dividing 13,081,871 by 3:
13,081,871 ÷ 3 = 4,360,623.6667
If the quotient is a whole number, then 3 and 4,360,623.6667 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 | 13,081,871 | |
| -1 | -13,081,871 |
Let's try dividing by 4:
13,081,871 ÷ 4 = 3,270,467.75
If the quotient is a whole number, then 4 and 3,270,467.75 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 | 13,081,871 | |
| -1 | 13,081,871 |
If you did it right, you will end up with this table:
| 1 | 11 | 23 | 29 | 253 | 319 | 667 | 1,783 | 7,337 | 19,613 | 41,009 | 51,707 | 451,099 | 568,777 | 1,189,261 | 13,081,871 |
| -1 | -11 | -23 | -29 | -253 | -319 | -667 | -1,783 | -7,337 | -19,613 | -41,009 | -51,707 | -451,099 | -568,777 | -1,189,261 | -13,081,871 |
Here are some more numbers to try:
Try the factor calculator