Q: What are the factor combinations of the number 646,825?
A:
Positive:
1 x 6468255 x 12936525 x 25873
Negative:
-1 x -646825-5 x -129365-25 x -25873
A:
Positive:
1 x 6468255 x 12936525 x 25873
Negative:
-1 x -646825-5 x -129365-25 x -25873
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 646,825, 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 | 646,825 | |
-1 | -646,825 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 646,825.
Example:
1 x 646,825 = 646,825
and
-1 x -646,825 = 646,825
Notice both answers equal 646,825
With that explanation out of the way, let's continue. Next, we take the number 646,825 and divide it by 2:
646,825 ÷ 2 = 323,412.5
If the quotient is a whole number, then 2 and 323,412.5 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 | 646,825 | |
-1 | -646,825 |
Now, we try dividing 646,825 by 3:
646,825 ÷ 3 = 215,608.3333
If the quotient is a whole number, then 3 and 215,608.3333 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 | 646,825 | |
-1 | -646,825 |
Let's try dividing by 4:
646,825 ÷ 4 = 161,706.25
If the quotient is a whole number, then 4 and 161,706.25 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 | 646,825 | |
-1 | 646,825 |
If you did it right, you will end up with this table:
1 | 5 | 25 | 25,873 | 129,365 | 646,825 |
-1 | -5 | -25 | -25,873 | -129,365 | -646,825 |
Here are some more numbers to try:
Try the factor calculator