A:
Positive:
1 x 79017055 x 15803417 x 112881535 x 225763401 x 19705563 x 140352005 x 39412807 x 2815
Negative:
-1 x -7901705-5 x -1580341-7 x -1128815-35 x -225763-401 x -19705-563 x -14035-2005 x -3941-2807 x -2815
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 7,901,705, 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 | 7,901,705 | |
| -1 | -7,901,705 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,901,705.
Example:
1 x 7,901,705 = 7,901,705
and
-1 x -7,901,705 = 7,901,705
Notice both answers equal 7,901,705
With that explanation out of the way, let's continue. Next, we take the number 7,901,705 and divide it by 2:
7,901,705 ÷ 2 = 3,950,852.5
If the quotient is a whole number, then 2 and 3,950,852.5 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 | 7,901,705 | |
| -1 | -7,901,705 |
Now, we try dividing 7,901,705 by 3:
7,901,705 ÷ 3 = 2,633,901.6667
If the quotient is a whole number, then 3 and 2,633,901.6667 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 | 7,901,705 | |
| -1 | -7,901,705 |
Let's try dividing by 4:
7,901,705 ÷ 4 = 1,975,426.25
If the quotient is a whole number, then 4 and 1,975,426.25 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 | 7,901,705 | |
| -1 | 7,901,705 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 401 | 563 | 2,005 | 2,807 | 2,815 | 3,941 | 14,035 | 19,705 | 225,763 | 1,128,815 | 1,580,341 | 7,901,705 |
| -1 | -5 | -7 | -35 | -401 | -563 | -2,005 | -2,807 | -2,815 | -3,941 | -14,035 | -19,705 | -225,763 | -1,128,815 | -1,580,341 | -7,901,705 |
Here are some more numbers to try:
Try the factor calculator