Q: What are the factor combinations of the number 48,912?

 A:
Positive:   1 x 489122 x 244563 x 163044 x 122286 x 81528 x 611412 x 407616 x 305724 x 203848 x 1019
Negative: -1 x -48912-2 x -24456-3 x -16304-4 x -12228-6 x -8152-8 x -6114-12 x -4076-16 x -3057-24 x -2038-48 x -1019


How do I find the factor combinations of the number 48,912?

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 48,912, 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 48,912
-1 -48,912

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 48,912.

Example:
1 x 48,912 = 48,912
and
-1 x -48,912 = 48,912
Notice both answers equal 48,912

With that explanation out of the way, let's continue. Next, we take the number 48,912 and divide it by 2:

48,912 ÷ 2 = 24,456

If the quotient is a whole number, then 2 and 24,456 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 24,456 48,912
-1 -2 -24,456 -48,912

Now, we try dividing 48,912 by 3:

48,912 ÷ 3 = 16,304

If the quotient is a whole number, then 3 and 16,304 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 16,304 24,456 48,912
-1 -2 -3 -16,304 -24,456 -48,912

Let's try dividing by 4:

48,912 ÷ 4 = 12,228

If the quotient is a whole number, then 4 and 12,228 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 12,228 16,304 24,456 48,912
-1 -2 -3 -4 -12,228 -16,304 -24,456 48,912
Keep dividing by the next highest number until you cannot divide anymore.

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

123468121624481,0192,0383,0574,0766,1148,15212,22816,30424,45648,912
-1-2-3-4-6-8-12-16-24-48-1,019-2,038-3,057-4,076-6,114-8,152-12,228-16,304-24,456-48,912

More Examples

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