Q: What are the factor combinations of the number 49,512?

 A:
Positive:   1 x 495122 x 247563 x 165044 x 123786 x 82528 x 618912 x 412624 x 2063
Negative: -1 x -49512-2 x -24756-3 x -16504-4 x -12378-6 x -8252-8 x -6189-12 x -4126-24 x -2063


How do I find the factor combinations of the number 49,512?

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 49,512, 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 49,512
-1 -49,512

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 49,512.

Example:
1 x 49,512 = 49,512
and
-1 x -49,512 = 49,512
Notice both answers equal 49,512

With that explanation out of the way, let's continue. Next, we take the number 49,512 and divide it by 2:

49,512 ÷ 2 = 24,756

If the quotient is a whole number, then 2 and 24,756 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 24,756 49,512
-1 -2 -24,756 -49,512

Now, we try dividing 49,512 by 3:

49,512 ÷ 3 = 16,504

If the quotient is a whole number, then 3 and 16,504 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 16,504 24,756 49,512
-1 -2 -3 -16,504 -24,756 -49,512

Let's try dividing by 4:

49,512 ÷ 4 = 12,378

If the quotient is a whole number, then 4 and 12,378 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 12,378 16,504 24,756 49,512
-1 -2 -3 -4 -12,378 -16,504 -24,756 49,512
Keep dividing by the next highest number until you cannot divide anymore.

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

12346812242,0634,1266,1898,25212,37816,50424,75649,512
-1-2-3-4-6-8-12-24-2,063-4,126-6,189-8,252-12,378-16,504-24,756-49,512

More Examples

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