A:
Positive:
1 x 203316255 x 406632525 x 813265125 x 162653311 x 65375523 x 388751555 x 130752615 x 7775
Negative:
-1 x -20331625-5 x -4066325-25 x -813265-125 x -162653-311 x -65375-523 x -38875-1555 x -13075-2615 x -7775
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 20,331,625, 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 | 20,331,625 | |
| -1 | -20,331,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,331,625.
Example:
1 x 20,331,625 = 20,331,625
and
-1 x -20,331,625 = 20,331,625
Notice both answers equal 20,331,625
With that explanation out of the way, let's continue. Next, we take the number 20,331,625 and divide it by 2:
20,331,625 ÷ 2 = 10,165,812.5
If the quotient is a whole number, then 2 and 10,165,812.5 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 | 20,331,625 | |
| -1 | -20,331,625 |
Now, we try dividing 20,331,625 by 3:
20,331,625 ÷ 3 = 6,777,208.3333
If the quotient is a whole number, then 3 and 6,777,208.3333 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 | 20,331,625 | |
| -1 | -20,331,625 |
Let's try dividing by 4:
20,331,625 ÷ 4 = 5,082,906.25
If the quotient is a whole number, then 4 and 5,082,906.25 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 | 20,331,625 | |
| -1 | 20,331,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 125 | 311 | 523 | 1,555 | 2,615 | 7,775 | 13,075 | 38,875 | 65,375 | 162,653 | 813,265 | 4,066,325 | 20,331,625 |
| -1 | -5 | -25 | -125 | -311 | -523 | -1,555 | -2,615 | -7,775 | -13,075 | -38,875 | -65,375 | -162,653 | -813,265 | -4,066,325 | -20,331,625 |
Here are some more numbers to try:
Try the factor calculator