Q: What are the factor combinations of the number 45,436?

 A:
Positive:   1 x 454362 x 227184 x 1135937 x 122874 x 614148 x 307
Negative: -1 x -45436-2 x -22718-4 x -11359-37 x -1228-74 x -614-148 x -307


How do I find the factor combinations of the number 45,436?

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 45,436, 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 45,436
-1 -45,436

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 45,436.

Example:
1 x 45,436 = 45,436
and
-1 x -45,436 = 45,436
Notice both answers equal 45,436

With that explanation out of the way, let's continue. Next, we take the number 45,436 and divide it by 2:

45,436 ÷ 2 = 22,718

If the quotient is a whole number, then 2 and 22,718 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!

Here is what our table should look like at this step:

1 2 22,718 45,436
-1 -2 -22,718 -45,436

Now, we try dividing 45,436 by 3:

45,436 ÷ 3 = 15,145.3333

If the quotient is a whole number, then 3 and 15,145.3333 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 2 22,718 45,436
-1 -2 -22,718 -45,436

Let's try dividing by 4:

45,436 ÷ 4 = 11,359

If the quotient is a whole number, then 4 and 11,359 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!

Here is what our table should look like at this step:

1 2 4 11,359 22,718 45,436
-1 -2 -4 -11,359 -22,718 45,436
Keep dividing by the next highest number until you cannot divide anymore.

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

12437741483076141,22811,35922,71845,436
-1-2-4-37-74-148-307-614-1,228-11,359-22,718-45,436

More Examples

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