A:
Positive:
1 x 159157155 x 318314371 x 224165107 x 148745355 x 44833419 x 37985535 x 297492095 x 7597
Negative:
-1 x -15915715-5 x -3183143-71 x -224165-107 x -148745-355 x -44833-419 x -37985-535 x -29749-2095 x -7597
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 15,915,715, 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 | 15,915,715 | |
| -1 | -15,915,715 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,915,715.
Example:
1 x 15,915,715 = 15,915,715
and
-1 x -15,915,715 = 15,915,715
Notice both answers equal 15,915,715
With that explanation out of the way, let's continue. Next, we take the number 15,915,715 and divide it by 2:
15,915,715 ÷ 2 = 7,957,857.5
If the quotient is a whole number, then 2 and 7,957,857.5 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 | 15,915,715 | |
| -1 | -15,915,715 |
Now, we try dividing 15,915,715 by 3:
15,915,715 ÷ 3 = 5,305,238.3333
If the quotient is a whole number, then 3 and 5,305,238.3333 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 | 15,915,715 | |
| -1 | -15,915,715 |
Let's try dividing by 4:
15,915,715 ÷ 4 = 3,978,928.75
If the quotient is a whole number, then 4 and 3,978,928.75 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 | 15,915,715 | |
| -1 | 15,915,715 |
If you did it right, you will end up with this table:
| 1 | 5 | 71 | 107 | 355 | 419 | 535 | 2,095 | 7,597 | 29,749 | 37,985 | 44,833 | 148,745 | 224,165 | 3,183,143 | 15,915,715 |
| -1 | -5 | -71 | -107 | -355 | -419 | -535 | -2,095 | -7,597 | -29,749 | -37,985 | -44,833 | -148,745 | -224,165 | -3,183,143 | -15,915,715 |
Here are some more numbers to try:
Try the factor calculator