A:
Positive:
1 x 210253755 x 42050757 x 300362525 x 84101535 x 600725125 x 168203175 x 120145875 x 24029
Negative:
-1 x -21025375-5 x -4205075-7 x -3003625-25 x -841015-35 x -600725-125 x -168203-175 x -120145-875 x -24029
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 21,025,375, 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 | 21,025,375 | |
| -1 | -21,025,375 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,025,375.
Example:
1 x 21,025,375 = 21,025,375
and
-1 x -21,025,375 = 21,025,375
Notice both answers equal 21,025,375
With that explanation out of the way, let's continue. Next, we take the number 21,025,375 and divide it by 2:
21,025,375 ÷ 2 = 10,512,687.5
If the quotient is a whole number, then 2 and 10,512,687.5 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 | 21,025,375 | |
| -1 | -21,025,375 |
Now, we try dividing 21,025,375 by 3:
21,025,375 ÷ 3 = 7,008,458.3333
If the quotient is a whole number, then 3 and 7,008,458.3333 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 | 21,025,375 | |
| -1 | -21,025,375 |
Let's try dividing by 4:
21,025,375 ÷ 4 = 5,256,343.75
If the quotient is a whole number, then 4 and 5,256,343.75 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 | 21,025,375 | |
| -1 | 21,025,375 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 125 | 175 | 875 | 24,029 | 120,145 | 168,203 | 600,725 | 841,015 | 3,003,625 | 4,205,075 | 21,025,375 |
| -1 | -5 | -7 | -25 | -35 | -125 | -175 | -875 | -24,029 | -120,145 | -168,203 | -600,725 | -841,015 | -3,003,625 | -4,205,075 | -21,025,375 |
Here are some more numbers to try:
Try the factor calculator