Q: What are the factor combinations of the number 656,968?

 A:
Positive:   1 x 6569682 x 3284844 x 1642428 x 8212113 x 5053626 x 2526852 x 12634104 x 6317
Negative: -1 x -656968-2 x -328484-4 x -164242-8 x -82121-13 x -50536-26 x -25268-52 x -12634-104 x -6317


How do I find the factor combinations of the number 656,968?

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 656,968, 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.

1 656,968
-1 -656,968

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 656,968.

Example:
1 x 656,968 = 656,968
and
-1 x -656,968 = 656,968
Notice both answers equal 656,968

With that explanation out of the way, let's continue. Next, we take the number 656,968 and divide it by 2:

656,968 ÷ 2 = 328,484

If the quotient is a whole number, then 2 and 328,484 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 2 328,484 656,968
-1 -2 -328,484 -656,968

Now, we try dividing 656,968 by 3:

656,968 ÷ 3 = 218,989.3333

If the quotient is a whole number, then 3 and 218,989.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 2 328,484 656,968
-1 -2 -328,484 -656,968

Let's try dividing by 4:

656,968 ÷ 4 = 164,242

If the quotient is a whole number, then 4 and 164,242 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 4 164,242 328,484 656,968
-1 -2 -4 -164,242 -328,484 656,968
Keep dividing by the next highest number until you cannot divide anymore.

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

12481326521046,31712,63425,26850,53682,121164,242328,484656,968
-1-2-4-8-13-26-52-104-6,317-12,634-25,268-50,536-82,121-164,242-328,484-656,968

More Examples

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