Q: What are the factor combinations of the number 340,423?

 A:
Positive:   1 x 34042319 x 1791723 x 1480141 x 8303361 x 943437 x 779
Negative: -1 x -340423-19 x -17917-23 x -14801-41 x -8303-361 x -943-437 x -779


How do I find the factor combinations of the number 340,423?

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 340,423, 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.

1 340,423
-1 -340,423

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 340,423.

Example:
1 x 340,423 = 340,423
and
-1 x -340,423 = 340,423
Notice both answers equal 340,423

With that explanation out of the way, let's continue. Next, we take the number 340,423 and divide it by 2:

340,423 ÷ 2 = 170,211.5

If the quotient is a whole number, then 2 and 170,211.5 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:

1 340,423
-1 -340,423

Now, we try dividing 340,423 by 3:

340,423 ÷ 3 = 113,474.3333

If the quotient is a whole number, then 3 and 113,474.3333 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:

1 340,423
-1 -340,423

Let's try dividing by 4:

340,423 ÷ 4 = 85,105.75

If the quotient is a whole number, then 4 and 85,105.75 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:

1 340,423
-1 340,423
Keep dividing by the next highest number until you cannot divide anymore.

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

11923413614377799438,30314,80117,917340,423
-1-19-23-41-361-437-779-943-8,303-14,801-17,917-340,423

More Examples

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