Q: What are the factor combinations of the number 24,745?

 A:
Positive:   1 x 247455 x 49497 x 353535 x 70749 x 505101 x 245
Negative: -1 x -24745-5 x -4949-7 x -3535-35 x -707-49 x -505-101 x -245


How do I find the factor combinations of the number 24,745?

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 24,745, 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 24,745
-1 -24,745

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 24,745.

Example:
1 x 24,745 = 24,745
and
-1 x -24,745 = 24,745
Notice both answers equal 24,745

With that explanation out of the way, let's continue. Next, we take the number 24,745 and divide it by 2:

24,745 ÷ 2 = 12,372.5

If the quotient is a whole number, then 2 and 12,372.5 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 24,745
-1 -24,745

Now, we try dividing 24,745 by 3:

24,745 ÷ 3 = 8,248.3333

If the quotient is a whole number, then 3 and 8,248.3333 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 24,745
-1 -24,745

Let's try dividing by 4:

24,745 ÷ 4 = 6,186.25

If the quotient is a whole number, then 4 and 6,186.25 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 24,745
-1 24,745
Keep dividing by the next highest number until you cannot divide anymore.

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

15735491012455057073,5354,94924,745
-1-5-7-35-49-101-245-505-707-3,535-4,949-24,745

More Examples

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