A:
Positive:
1 x 910917 x 1301311 x 828113 x 700749 x 185977 x 118391 x 1001143 x 637169 x 539
Negative:
-1 x -91091-7 x -13013-11 x -8281-13 x -7007-49 x -1859-77 x -1183-91 x -1001-143 x -637-169 x -539
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 91,091, 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 | 91,091 | |
| -1 | -91,091 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 91,091.
Example:
1 x 91,091 = 91,091
and
-1 x -91,091 = 91,091
Notice both answers equal 91,091
With that explanation out of the way, let's continue. Next, we take the number 91,091 and divide it by 2:
91,091 ÷ 2 = 45,545.5
If the quotient is a whole number, then 2 and 45,545.5 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 | 91,091 | |
| -1 | -91,091 |
Now, we try dividing 91,091 by 3:
91,091 ÷ 3 = 30,363.6667
If the quotient is a whole number, then 3 and 30,363.6667 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 | 91,091 | |
| -1 | -91,091 |
Let's try dividing by 4:
91,091 ÷ 4 = 22,772.75
If the quotient is a whole number, then 4 and 22,772.75 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 | 91,091 | |
| -1 | 91,091 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 13 | 49 | 77 | 91 | 143 | 169 | 539 | 637 | 1,001 | 1,183 | 1,859 | 7,007 | 8,281 | 13,013 | 91,091 |
| -1 | -7 | -11 | -13 | -49 | -77 | -91 | -143 | -169 | -539 | -637 | -1,001 | -1,183 | -1,859 | -7,007 | -8,281 | -13,013 | -91,091 |
Here are some more numbers to try:
Try the factor calculator