A:
Positive:
1 x 207856255 x 41571257 x 296937525 x 83142535 x 593875125 x 166285175 x 118775625 x 33257875 x 237554375 x 4751
Negative:
-1 x -20785625-5 x -4157125-7 x -2969375-25 x -831425-35 x -593875-125 x -166285-175 x -118775-625 x -33257-875 x -23755-4375 x -4751
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 20,785,625, 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 | 20,785,625 | |
| -1 | -20,785,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,785,625.
Example:
1 x 20,785,625 = 20,785,625
and
-1 x -20,785,625 = 20,785,625
Notice both answers equal 20,785,625
With that explanation out of the way, let's continue. Next, we take the number 20,785,625 and divide it by 2:
20,785,625 ÷ 2 = 10,392,812.5
If the quotient is a whole number, then 2 and 10,392,812.5 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 | 20,785,625 | |
| -1 | -20,785,625 |
Now, we try dividing 20,785,625 by 3:
20,785,625 ÷ 3 = 6,928,541.6667
If the quotient is a whole number, then 3 and 6,928,541.6667 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 | 20,785,625 | |
| -1 | -20,785,625 |
Let's try dividing by 4:
20,785,625 ÷ 4 = 5,196,406.25
If the quotient is a whole number, then 4 and 5,196,406.25 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 | 20,785,625 | |
| -1 | 20,785,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 125 | 175 | 625 | 875 | 4,375 | 4,751 | 23,755 | 33,257 | 118,775 | 166,285 | 593,875 | 831,425 | 2,969,375 | 4,157,125 | 20,785,625 |
| -1 | -5 | -7 | -25 | -35 | -125 | -175 | -625 | -875 | -4,375 | -4,751 | -23,755 | -33,257 | -118,775 | -166,285 | -593,875 | -831,425 | -2,969,375 | -4,157,125 | -20,785,625 |
Here are some more numbers to try:
Try the factor calculator