Q: What are the factor combinations of the number 238,931?

 A:
Positive:   1 x 2389317 x 3413311 x 2172129 x 823977 x 3103107 x 2233203 x 1177319 x 749
Negative: -1 x -238931-7 x -34133-11 x -21721-29 x -8239-77 x -3103-107 x -2233-203 x -1177-319 x -749


How do I find the factor combinations of the number 238,931?

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 238,931, 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.

1 238,931
-1 -238,931

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 238,931.

Example:
1 x 238,931 = 238,931
and
-1 x -238,931 = 238,931
Notice both answers equal 238,931

With that explanation out of the way, let's continue. Next, we take the number 238,931 and divide it by 2:

238,931 ÷ 2 = 119,465.5

If the quotient is a whole number, then 2 and 119,465.5 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:

1 238,931
-1 -238,931

Now, we try dividing 238,931 by 3:

238,931 ÷ 3 = 79,643.6667

If the quotient is a whole number, then 3 and 79,643.6667 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:

1 238,931
-1 -238,931

Let's try dividing by 4:

238,931 ÷ 4 = 59,732.75

If the quotient is a whole number, then 4 and 59,732.75 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:

1 238,931
-1 238,931
Keep dividing by the next highest number until you cannot divide anymore.

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

171129771072033197491,1772,2333,1038,23921,72134,133238,931
-1-7-11-29-77-107-203-319-749-1,177-2,233-3,103-8,239-21,721-34,133-238,931

More Examples

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