Q: What are the factor combinations of the number 117,961?

 A:
Positive:   1 x 117961179 x 659
Negative: -1 x -117961-179 x -659


How do I find the factor combinations of the number 117,961?

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 117,961, 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.

1 117,961
-1 -117,961

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 117,961.

Example:
1 x 117,961 = 117,961
and
-1 x -117,961 = 117,961
Notice both answers equal 117,961

With that explanation out of the way, let's continue. Next, we take the number 117,961 and divide it by 2:

117,961 ÷ 2 = 58,980.5

If the quotient is a whole number, then 2 and 58,980.5 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:

1 117,961
-1 -117,961

Now, we try dividing 117,961 by 3:

117,961 ÷ 3 = 39,320.3333

If the quotient is a whole number, then 3 and 39,320.3333 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:

1 117,961
-1 -117,961

Let's try dividing by 4:

117,961 ÷ 4 = 29,490.25

If the quotient is a whole number, then 4 and 29,490.25 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:

1 117,961
-1 117,961
Keep dividing by the next highest number until you cannot divide anymore.

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

1179659117,961
-1-179-659-117,961

More Examples

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