Q: What are the factor combinations of the number 162,332,661?

 A:
Positive:   1 x 1623326613 x 54110887331 x 490431993 x 163477
Negative: -1 x -162332661-3 x -54110887-331 x -490431-993 x -163477


How do I find the factor combinations of the number 162,332,661?

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 162,332,661, 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.

1 162,332,661
-1 -162,332,661

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 162,332,661.

Example:
1 x 162,332,661 = 162,332,661
and
-1 x -162,332,661 = 162,332,661
Notice both answers equal 162,332,661

With that explanation out of the way, let's continue. Next, we take the number 162,332,661 and divide it by 2:

162,332,661 ÷ 2 = 81,166,330.5

If the quotient is a whole number, then 2 and 81,166,330.5 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:

1 162,332,661
-1 -162,332,661

Now, we try dividing 162,332,661 by 3:

162,332,661 ÷ 3 = 54,110,887

If the quotient is a whole number, then 3 and 54,110,887 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 54,110,887 162,332,661
-1 -3 -54,110,887 -162,332,661

Let's try dividing by 4:

162,332,661 ÷ 4 = 40,583,165.25

If the quotient is a whole number, then 4 and 40,583,165.25 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 54,110,887 162,332,661
-1 -3 -54,110,887 162,332,661
Keep dividing by the next highest number until you cannot divide anymore.

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

13331993163,477490,43154,110,887162,332,661
-1-3-331-993-163,477-490,431-54,110,887-162,332,661

More Examples

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