Q: What are the factor combinations of the number 40,920,331?

 A:
Positive:   1 x 4092033189 x 459779107 x 3824334297 x 9523
Negative: -1 x -40920331-89 x -459779-107 x -382433-4297 x -9523


How do I find the factor combinations of the number 40,920,331?

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 40,920,331, 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 40,920,331
-1 -40,920,331

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 40,920,331.

Example:
1 x 40,920,331 = 40,920,331
and
-1 x -40,920,331 = 40,920,331
Notice both answers equal 40,920,331

With that explanation out of the way, let's continue. Next, we take the number 40,920,331 and divide it by 2:

40,920,331 ÷ 2 = 20,460,165.5

If the quotient is a whole number, then 2 and 20,460,165.5 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 40,920,331
-1 -40,920,331

Now, we try dividing 40,920,331 by 3:

40,920,331 ÷ 3 = 13,640,110.3333

If the quotient is a whole number, then 3 and 13,640,110.3333 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 40,920,331
-1 -40,920,331

Let's try dividing by 4:

40,920,331 ÷ 4 = 10,230,082.75

If the quotient is a whole number, then 4 and 10,230,082.75 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 40,920,331
-1 40,920,331
Keep dividing by the next highest number until you cannot divide anymore.

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

1891074,2979,523382,433459,77940,920,331
-1-89-107-4,297-9,523-382,433-459,779-40,920,331

More Examples

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