Q: What are the factor combinations of the number 637,464?

 A:
Positive:   1 x 6374642 x 3187323 x 2124884 x 1593666 x 1062448 x 7968312 x 5312224 x 26561
Negative: -1 x -637464-2 x -318732-3 x -212488-4 x -159366-6 x -106244-8 x -79683-12 x -53122-24 x -26561


How do I find the factor combinations of the number 637,464?

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 637,464, 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.

1 637,464
-1 -637,464

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 637,464.

Example:
1 x 637,464 = 637,464
and
-1 x -637,464 = 637,464
Notice both answers equal 637,464

With that explanation out of the way, let's continue. Next, we take the number 637,464 and divide it by 2:

637,464 ÷ 2 = 318,732

If the quotient is a whole number, then 2 and 318,732 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:

1 2 318,732 637,464
-1 -2 -318,732 -637,464

Now, we try dividing 637,464 by 3:

637,464 ÷ 3 = 212,488

If the quotient is a whole number, then 3 and 212,488 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:

1 2 3 212,488 318,732 637,464
-1 -2 -3 -212,488 -318,732 -637,464

Let's try dividing by 4:

637,464 ÷ 4 = 159,366

If the quotient is a whole number, then 4 and 159,366 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:

1 2 3 4 159,366 212,488 318,732 637,464
-1 -2 -3 -4 -159,366 -212,488 -318,732 637,464
Keep dividing by the next highest number until you cannot divide anymore.

If you did it right, you will end up with this table:

123468122426,56153,12279,683106,244159,366212,488318,732637,464
-1-2-3-4-6-8-12-24-26,561-53,122-79,683-106,244-159,366-212,488-318,732-637,464

More Examples

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