Q: What are the factor combinations of the number 22,507?

 A:
Positive:   1 x 2250771 x 317
Negative: -1 x -22507-71 x -317


How do I find the factor combinations of the number 22,507?

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 22,507, 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 22,507
-1 -22,507

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 22,507.

Example:
1 x 22,507 = 22,507
and
-1 x -22,507 = 22,507
Notice both answers equal 22,507

With that explanation out of the way, let's continue. Next, we take the number 22,507 and divide it by 2:

22,507 ÷ 2 = 11,253.5

If the quotient is a whole number, then 2 and 11,253.5 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 22,507
-1 -22,507

Now, we try dividing 22,507 by 3:

22,507 ÷ 3 = 7,502.3333

If the quotient is a whole number, then 3 and 7,502.3333 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 22,507
-1 -22,507

Let's try dividing by 4:

22,507 ÷ 4 = 5,626.75

If the quotient is a whole number, then 4 and 5,626.75 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 22,507
-1 22,507
Keep dividing by the next highest number until you cannot divide anymore.

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

17131722,507
-1-71-317-22,507

More Examples

Here are some more numbers to try:

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