Q: What are the factor combinations of the number 249,725?

 A:
Positive:   1 x 2497255 x 499457 x 3567525 x 998935 x 7135175 x 1427
Negative: -1 x -249725-5 x -49945-7 x -35675-25 x -9989-35 x -7135-175 x -1427


How do I find the factor combinations of the number 249,725?

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 249,725, 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.

1 249,725
-1 -249,725

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 249,725.

Example:
1 x 249,725 = 249,725
and
-1 x -249,725 = 249,725
Notice both answers equal 249,725

With that explanation out of the way, let's continue. Next, we take the number 249,725 and divide it by 2:

249,725 ÷ 2 = 124,862.5

If the quotient is a whole number, then 2 and 124,862.5 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:

1 249,725
-1 -249,725

Now, we try dividing 249,725 by 3:

249,725 ÷ 3 = 83,241.6667

If the quotient is a whole number, then 3 and 83,241.6667 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:

1 249,725
-1 -249,725

Let's try dividing by 4:

249,725 ÷ 4 = 62,431.25

If the quotient is a whole number, then 4 and 62,431.25 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:

1 249,725
-1 249,725
Keep dividing by the next highest number until you cannot divide anymore.

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

15725351751,4277,1359,98935,67549,945249,725
-1-5-7-25-35-175-1,427-7,135-9,989-35,675-49,945-249,725

More Examples

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