Q: What are the factor combinations of the number 132,979?

 A:
Positive:   1 x 1329797 x 1899711 x 1208977 x 1727121 x 1099157 x 847
Negative: -1 x -132979-7 x -18997-11 x -12089-77 x -1727-121 x -1099-157 x -847


How do I find the factor combinations of the number 132,979?

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 132,979, 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.

1 132,979
-1 -132,979

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 132,979.

Example:
1 x 132,979 = 132,979
and
-1 x -132,979 = 132,979
Notice both answers equal 132,979

With that explanation out of the way, let's continue. Next, we take the number 132,979 and divide it by 2:

132,979 ÷ 2 = 66,489.5

If the quotient is a whole number, then 2 and 66,489.5 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:

1 132,979
-1 -132,979

Now, we try dividing 132,979 by 3:

132,979 ÷ 3 = 44,326.3333

If the quotient is a whole number, then 3 and 44,326.3333 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:

1 132,979
-1 -132,979

Let's try dividing by 4:

132,979 ÷ 4 = 33,244.75

If the quotient is a whole number, then 4 and 33,244.75 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:

1 132,979
-1 132,979
Keep dividing by the next highest number until you cannot divide anymore.

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

1711771211578471,0991,72712,08918,997132,979
-1-7-11-77-121-157-847-1,099-1,727-12,089-18,997-132,979

More Examples

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