A:
Positive:
1 x 71078155 x 142156311 x 64616513 x 54675555 x 12923365 x 109351143 x 49705715 x 9941
Negative:
-1 x -7107815-5 x -1421563-11 x -646165-13 x -546755-55 x -129233-65 x -109351-143 x -49705-715 x -9941
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 7,107,815, 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 | 7,107,815 | |
| -1 | -7,107,815 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,107,815.
Example:
1 x 7,107,815 = 7,107,815
and
-1 x -7,107,815 = 7,107,815
Notice both answers equal 7,107,815
With that explanation out of the way, let's continue. Next, we take the number 7,107,815 and divide it by 2:
7,107,815 ÷ 2 = 3,553,907.5
If the quotient is a whole number, then 2 and 3,553,907.5 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 | 7,107,815 | |
| -1 | -7,107,815 |
Now, we try dividing 7,107,815 by 3:
7,107,815 ÷ 3 = 2,369,271.6667
If the quotient is a whole number, then 3 and 2,369,271.6667 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 | 7,107,815 | |
| -1 | -7,107,815 |
Let's try dividing by 4:
7,107,815 ÷ 4 = 1,776,953.75
If the quotient is a whole number, then 4 and 1,776,953.75 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 | 7,107,815 | |
| -1 | 7,107,815 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 13 | 55 | 65 | 143 | 715 | 9,941 | 49,705 | 109,351 | 129,233 | 546,755 | 646,165 | 1,421,563 | 7,107,815 |
| -1 | -5 | -11 | -13 | -55 | -65 | -143 | -715 | -9,941 | -49,705 | -109,351 | -129,233 | -546,755 | -646,165 | -1,421,563 | -7,107,815 |
Here are some more numbers to try:
Try the factor calculator