A:
Positive:
1 x 158856255 x 31771257 x 226937525 x 63542535 x 453875125 x 127085175 x 90775625 x 25417875 x 181553631 x 4375
Negative:
-1 x -15885625-5 x -3177125-7 x -2269375-25 x -635425-35 x -453875-125 x -127085-175 x -90775-625 x -25417-875 x -18155-3631 x -4375
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 15,885,625, 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 | 15,885,625 | |
| -1 | -15,885,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,885,625.
Example:
1 x 15,885,625 = 15,885,625
and
-1 x -15,885,625 = 15,885,625
Notice both answers equal 15,885,625
With that explanation out of the way, let's continue. Next, we take the number 15,885,625 and divide it by 2:
15,885,625 ÷ 2 = 7,942,812.5
If the quotient is a whole number, then 2 and 7,942,812.5 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 | 15,885,625 | |
| -1 | -15,885,625 |
Now, we try dividing 15,885,625 by 3:
15,885,625 ÷ 3 = 5,295,208.3333
If the quotient is a whole number, then 3 and 5,295,208.3333 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 | 15,885,625 | |
| -1 | -15,885,625 |
Let's try dividing by 4:
15,885,625 ÷ 4 = 3,971,406.25
If the quotient is a whole number, then 4 and 3,971,406.25 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 | 15,885,625 | |
| -1 | 15,885,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 125 | 175 | 625 | 875 | 3,631 | 4,375 | 18,155 | 25,417 | 90,775 | 127,085 | 453,875 | 635,425 | 2,269,375 | 3,177,125 | 15,885,625 |
| -1 | -5 | -7 | -25 | -35 | -125 | -175 | -625 | -875 | -3,631 | -4,375 | -18,155 | -25,417 | -90,775 | -127,085 | -453,875 | -635,425 | -2,269,375 | -3,177,125 | -15,885,625 |
Here are some more numbers to try:
Try the factor calculator