How do I find the factor combinations of the number 800,568,408?
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 800,568,408, it is easier to work with a table - it's called factoring from the outside in.
Outside in Factoring
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 |
|
800,568,408 |
-1 |
|
-800,568,408 |
Why are the negative numbers included?
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 800,568,408.
Example:
1 x 800,568,408 = 800,568,408
and
-1 x -800,568,408 = 800,568,408
Notice both answers equal 800,568,408
With that explanation out of the way, let's continue. Next, we take the number 800,568,408 and divide it by 2:
800,568,408 ÷ 2 = 400,284,204
If the quotient is a whole number, then 2 and 400,284,204 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!
Here is what our table should look like at this step:
Now, we try dividing 800,568,408 by 3:
800,568,408 ÷ 3 = 266,856,136
If the quotient is a whole number, then 3 and 266,856,136 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!
Here is what our table should look like at this step:
Let's try dividing by 4:
800,568,408 ÷ 4 = 200,142,102
If the quotient is a whole number, then 4 and 200,142,102 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!
Here is what our table should look like at this step:
Keep dividing by the next highest number until you cannot divide anymore.
If you did it right, you will end up with this table:
More Examples
Here are some more numbers to try:
Try the
factor calculator