Q: What are the factor combinations of the number 817,968?

 A:
Positive:   1 x 8179682 x 4089843 x 2726564 x 2044926 x 1363288 x 10224612 x 6816416 x 5112324 x 3408248 x 17041
Negative: -1 x -817968-2 x -408984-3 x -272656-4 x -204492-6 x -136328-8 x -102246-12 x -68164-16 x -51123-24 x -34082-48 x -17041


How do I find the factor combinations of the number 817,968?

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 817,968, 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.

1 817,968
-1 -817,968

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 817,968.

Example:
1 x 817,968 = 817,968
and
-1 x -817,968 = 817,968
Notice both answers equal 817,968

With that explanation out of the way, let's continue. Next, we take the number 817,968 and divide it by 2:

817,968 ÷ 2 = 408,984

If the quotient is a whole number, then 2 and 408,984 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 2 408,984 817,968
-1 -2 -408,984 -817,968

Now, we try dividing 817,968 by 3:

817,968 ÷ 3 = 272,656

If the quotient is a whole number, then 3 and 272,656 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 3 272,656 408,984 817,968
-1 -2 -3 -272,656 -408,984 -817,968

Let's try dividing by 4:

817,968 ÷ 4 = 204,492

If the quotient is a whole number, then 4 and 204,492 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 4 204,492 272,656 408,984 817,968
-1 -2 -3 -4 -204,492 -272,656 -408,984 817,968
Keep dividing by the next highest number until you cannot divide anymore.

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

1234681216244817,04134,08251,12368,164102,246136,328204,492272,656408,984817,968
-1-2-3-4-6-8-12-16-24-48-17,041-34,082-51,123-68,164-102,246-136,328-204,492-272,656-408,984-817,968

More Examples

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