Q: What are the factor combinations of the number 419,433?

 A:
Positive:   1 x 4194333 x 1398117 x 5991921 x 19973
Negative: -1 x -419433-3 x -139811-7 x -59919-21 x -19973


How do I find the factor combinations of the number 419,433?

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 419,433, 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.

1 419,433
-1 -419,433

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 419,433.

Example:
1 x 419,433 = 419,433
and
-1 x -419,433 = 419,433
Notice both answers equal 419,433

With that explanation out of the way, let's continue. Next, we take the number 419,433 and divide it by 2:

419,433 ÷ 2 = 209,716.5

If the quotient is a whole number, then 2 and 209,716.5 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:

1 419,433
-1 -419,433

Now, we try dividing 419,433 by 3:

419,433 ÷ 3 = 139,811

If the quotient is a whole number, then 3 and 139,811 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 3 139,811 419,433
-1 -3 -139,811 -419,433

Let's try dividing by 4:

419,433 ÷ 4 = 104,858.25

If the quotient is a whole number, then 4 and 104,858.25 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 3 139,811 419,433
-1 -3 -139,811 419,433
Keep dividing by the next highest number until you cannot divide anymore.

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

1372119,97359,919139,811419,433
-1-3-7-21-19,973-59,919-139,811-419,433

More Examples

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