A:
Positive:
1 x 201706255 x 403412525 x 80682559 x 341875125 x 161365295 x 68375547 x 36875625 x 322731475 x 136752735 x 7375
Negative:
-1 x -20170625-5 x -4034125-25 x -806825-59 x -341875-125 x -161365-295 x -68375-547 x -36875-625 x -32273-1475 x -13675-2735 x -7375
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 20,170,625, 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 | 20,170,625 | |
| -1 | -20,170,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,170,625.
Example:
1 x 20,170,625 = 20,170,625
and
-1 x -20,170,625 = 20,170,625
Notice both answers equal 20,170,625
With that explanation out of the way, let's continue. Next, we take the number 20,170,625 and divide it by 2:
20,170,625 ÷ 2 = 10,085,312.5
If the quotient is a whole number, then 2 and 10,085,312.5 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 | 20,170,625 | |
| -1 | -20,170,625 |
Now, we try dividing 20,170,625 by 3:
20,170,625 ÷ 3 = 6,723,541.6667
If the quotient is a whole number, then 3 and 6,723,541.6667 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 | 20,170,625 | |
| -1 | -20,170,625 |
Let's try dividing by 4:
20,170,625 ÷ 4 = 5,042,656.25
If the quotient is a whole number, then 4 and 5,042,656.25 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 | 20,170,625 | |
| -1 | 20,170,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 59 | 125 | 295 | 547 | 625 | 1,475 | 2,735 | 7,375 | 13,675 | 32,273 | 36,875 | 68,375 | 161,365 | 341,875 | 806,825 | 4,034,125 | 20,170,625 |
| -1 | -5 | -25 | -59 | -125 | -295 | -547 | -625 | -1,475 | -2,735 | -7,375 | -13,675 | -32,273 | -36,875 | -68,375 | -161,365 | -341,875 | -806,825 | -4,034,125 | -20,170,625 |
Here are some more numbers to try:
Try the factor calculator