A:
Positive:
1 x 790417111 x 71856119 x 41600959 x 133969209 x 37819641 x 12331649 x 121791121 x 7051
Negative:
-1 x -7904171-11 x -718561-19 x -416009-59 x -133969-209 x -37819-641 x -12331-649 x -12179-1121 x -7051
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 7,904,171, 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 | 7,904,171 | |
| -1 | -7,904,171 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,904,171.
Example:
1 x 7,904,171 = 7,904,171
and
-1 x -7,904,171 = 7,904,171
Notice both answers equal 7,904,171
With that explanation out of the way, let's continue. Next, we take the number 7,904,171 and divide it by 2:
7,904,171 ÷ 2 = 3,952,085.5
If the quotient is a whole number, then 2 and 3,952,085.5 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 | 7,904,171 | |
| -1 | -7,904,171 |
Now, we try dividing 7,904,171 by 3:
7,904,171 ÷ 3 = 2,634,723.6667
If the quotient is a whole number, then 3 and 2,634,723.6667 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 | 7,904,171 | |
| -1 | -7,904,171 |
Let's try dividing by 4:
7,904,171 ÷ 4 = 1,976,042.75
If the quotient is a whole number, then 4 and 1,976,042.75 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 | 7,904,171 | |
| -1 | 7,904,171 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 59 | 209 | 641 | 649 | 1,121 | 7,051 | 12,179 | 12,331 | 37,819 | 133,969 | 416,009 | 718,561 | 7,904,171 |
| -1 | -11 | -19 | -59 | -209 | -641 | -649 | -1,121 | -7,051 | -12,179 | -12,331 | -37,819 | -133,969 | -416,009 | -718,561 | -7,904,171 |
Here are some more numbers to try:
Try the factor calculator