A:
Positive:
1 x 155559255 x 31111857 x 222227511 x 141417525 x 62223735 x 44445555 x 28283577 x 202025175 x 88891275 x 56567385 x 404051925 x 8081
Negative:
-1 x -15555925-5 x -3111185-7 x -2222275-11 x -1414175-25 x -622237-35 x -444455-55 x -282835-77 x -202025-175 x -88891-275 x -56567-385 x -40405-1925 x -8081
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 15,555,925, 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 | 15,555,925 | |
| -1 | -15,555,925 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,555,925.
Example:
1 x 15,555,925 = 15,555,925
and
-1 x -15,555,925 = 15,555,925
Notice both answers equal 15,555,925
With that explanation out of the way, let's continue. Next, we take the number 15,555,925 and divide it by 2:
15,555,925 ÷ 2 = 7,777,962.5
If the quotient is a whole number, then 2 and 7,777,962.5 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 | 15,555,925 | |
| -1 | -15,555,925 |
Now, we try dividing 15,555,925 by 3:
15,555,925 ÷ 3 = 5,185,308.3333
If the quotient is a whole number, then 3 and 5,185,308.3333 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 | 15,555,925 | |
| -1 | -15,555,925 |
Let's try dividing by 4:
15,555,925 ÷ 4 = 3,888,981.25
If the quotient is a whole number, then 4 and 3,888,981.25 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 | 15,555,925 | |
| -1 | 15,555,925 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 25 | 35 | 55 | 77 | 175 | 275 | 385 | 1,925 | 8,081 | 40,405 | 56,567 | 88,891 | 202,025 | 282,835 | 444,455 | 622,237 | 1,414,175 | 2,222,275 | 3,111,185 | 15,555,925 |
| -1 | -5 | -7 | -11 | -25 | -35 | -55 | -77 | -175 | -275 | -385 | -1,925 | -8,081 | -40,405 | -56,567 | -88,891 | -202,025 | -282,835 | -444,455 | -622,237 | -1,414,175 | -2,222,275 | -3,111,185 | -15,555,925 |
Here are some more numbers to try:
Try the factor calculator