Q: What are the factor combinations of the number 314,648?

 A:
Positive:   1 x 3146482 x 1573244 x 786628 x 3933137 x 850474 x 4252148 x 2126296 x 1063
Negative: -1 x -314648-2 x -157324-4 x -78662-8 x -39331-37 x -8504-74 x -4252-148 x -2126-296 x -1063


How do I find the factor combinations of the number 314,648?

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 314,648, 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.

1 314,648
-1 -314,648

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 314,648.

Example:
1 x 314,648 = 314,648
and
-1 x -314,648 = 314,648
Notice both answers equal 314,648

With that explanation out of the way, let's continue. Next, we take the number 314,648 and divide it by 2:

314,648 ÷ 2 = 157,324

If the quotient is a whole number, then 2 and 157,324 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 2 157,324 314,648
-1 -2 -157,324 -314,648

Now, we try dividing 314,648 by 3:

314,648 ÷ 3 = 104,882.6667

If the quotient is a whole number, then 3 and 104,882.6667 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 2 157,324 314,648
-1 -2 -157,324 -314,648

Let's try dividing by 4:

314,648 ÷ 4 = 78,662

If the quotient is a whole number, then 4 and 78,662 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 2 4 78,662 157,324 314,648
-1 -2 -4 -78,662 -157,324 314,648
Keep dividing by the next highest number until you cannot divide anymore.

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

124837741482961,0632,1264,2528,50439,33178,662157,324314,648
-1-2-4-8-37-74-148-296-1,063-2,126-4,252-8,504-39,331-78,662-157,324-314,648

More Examples

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