Q: What are the factor combinations of the number 220,854?

 A:
Positive:   1 x 2208542 x 1104273 x 736186 x 36809
Negative: -1 x -220854-2 x -110427-3 x -73618-6 x -36809


How do I find the factor combinations of the number 220,854?

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 220,854, 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.

1 220,854
-1 -220,854

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 220,854.

Example:
1 x 220,854 = 220,854
and
-1 x -220,854 = 220,854
Notice both answers equal 220,854

With that explanation out of the way, let's continue. Next, we take the number 220,854 and divide it by 2:

220,854 ÷ 2 = 110,427

If the quotient is a whole number, then 2 and 110,427 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 2 110,427 220,854
-1 -2 -110,427 -220,854

Now, we try dividing 220,854 by 3:

220,854 ÷ 3 = 73,618

If the quotient is a whole number, then 3 and 73,618 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 3 73,618 110,427 220,854
-1 -2 -3 -73,618 -110,427 -220,854

Let's try dividing by 4:

220,854 ÷ 4 = 55,213.5

If the quotient is a whole number, then 4 and 55,213.5 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 2 3 73,618 110,427 220,854
-1 -2 -3 -73,618 -110,427 220,854
Keep dividing by the next highest number until you cannot divide anymore.

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

123636,80973,618110,427220,854
-1-2-3-6-36,809-73,618-110,427-220,854

More Examples

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