A:
Positive:
1 x 20978755 x 41957513 x 16137525 x 8391565 x 32275125 x 16783325 x 64551291 x 1625
Negative:
-1 x -2097875-5 x -419575-13 x -161375-25 x -83915-65 x -32275-125 x -16783-325 x -6455-1291 x -1625
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 2,097,875, 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 | 2,097,875 | |
| -1 | -2,097,875 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,097,875.
Example:
1 x 2,097,875 = 2,097,875
and
-1 x -2,097,875 = 2,097,875
Notice both answers equal 2,097,875
With that explanation out of the way, let's continue. Next, we take the number 2,097,875 and divide it by 2:
2,097,875 ÷ 2 = 1,048,937.5
If the quotient is a whole number, then 2 and 1,048,937.5 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 | 2,097,875 | |
| -1 | -2,097,875 |
Now, we try dividing 2,097,875 by 3:
2,097,875 ÷ 3 = 699,291.6667
If the quotient is a whole number, then 3 and 699,291.6667 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 | 2,097,875 | |
| -1 | -2,097,875 |
Let's try dividing by 4:
2,097,875 ÷ 4 = 524,468.75
If the quotient is a whole number, then 4 and 524,468.75 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 | 2,097,875 | |
| -1 | 2,097,875 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 65 | 125 | 325 | 1,291 | 1,625 | 6,455 | 16,783 | 32,275 | 83,915 | 161,375 | 419,575 | 2,097,875 |
| -1 | -5 | -13 | -25 | -65 | -125 | -325 | -1,291 | -1,625 | -6,455 | -16,783 | -32,275 | -83,915 | -161,375 | -419,575 | -2,097,875 |
Here are some more numbers to try:
Try the factor calculator