Q: What are the factor combinations of the number 20,642,225?
A:
Positive:
1 x 206422255 x 412844525 x 825689
Negative:
-1 x -20642225-5 x -4128445-25 x -825689
A:
Positive:
1 x 206422255 x 412844525 x 825689
Negative:
-1 x -20642225-5 x -4128445-25 x -825689
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 20,642,225, 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 | 20,642,225 | |
-1 | -20,642,225 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,642,225.
Example:
1 x 20,642,225 = 20,642,225
and
-1 x -20,642,225 = 20,642,225
Notice both answers equal 20,642,225
With that explanation out of the way, let's continue. Next, we take the number 20,642,225 and divide it by 2:
20,642,225 ÷ 2 = 10,321,112.5
If the quotient is a whole number, then 2 and 10,321,112.5 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 | 20,642,225 | |
-1 | -20,642,225 |
Now, we try dividing 20,642,225 by 3:
20,642,225 ÷ 3 = 6,880,741.6667
If the quotient is a whole number, then 3 and 6,880,741.6667 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 | 20,642,225 | |
-1 | -20,642,225 |
Let's try dividing by 4:
20,642,225 ÷ 4 = 5,160,556.25
If the quotient is a whole number, then 4 and 5,160,556.25 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 | 20,642,225 | |
-1 | 20,642,225 |
If you did it right, you will end up with this table:
1 | 5 | 25 | 825,689 | 4,128,445 | 20,642,225 |
-1 | -5 | -25 | -825,689 | -4,128,445 | -20,642,225 |
Here are some more numbers to try:
Try the factor calculator