Q: What are the factor combinations of the number 320,220,213?

 A:
Positive:   1 x 3202202133 x 106740071127 x 2521419381 x 840473
Negative: -1 x -320220213-3 x -106740071-127 x -2521419-381 x -840473


How do I find the factor combinations of the number 320,220,213?

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 320,220,213, 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.

1 320,220,213
-1 -320,220,213

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 320,220,213.

Example:
1 x 320,220,213 = 320,220,213
and
-1 x -320,220,213 = 320,220,213
Notice both answers equal 320,220,213

With that explanation out of the way, let's continue. Next, we take the number 320,220,213 and divide it by 2:

320,220,213 ÷ 2 = 160,110,106.5

If the quotient is a whole number, then 2 and 160,110,106.5 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:

1 320,220,213
-1 -320,220,213

Now, we try dividing 320,220,213 by 3:

320,220,213 ÷ 3 = 106,740,071

If the quotient is a whole number, then 3 and 106,740,071 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 3 106,740,071 320,220,213
-1 -3 -106,740,071 -320,220,213

Let's try dividing by 4:

320,220,213 ÷ 4 = 80,055,053.25

If the quotient is a whole number, then 4 and 80,055,053.25 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 3 106,740,071 320,220,213
-1 -3 -106,740,071 320,220,213
Keep dividing by the next highest number until you cannot divide anymore.

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

13127381840,4732,521,419106,740,071320,220,213
-1-3-127-381-840,473-2,521,419-106,740,071-320,220,213

More Examples

Here are some more numbers to try:

Try the factor calculator

Explore more about the number 320,220,213:


Ask a Question