Q: What are the factor combinations of the number 681,936?

 A:
Positive:   1 x 6819362 x 3409683 x 2273124 x 1704846 x 1136568 x 8524212 x 5682816 x 4262124 x 2841448 x 14207
Negative: -1 x -681936-2 x -340968-3 x -227312-4 x -170484-6 x -113656-8 x -85242-12 x -56828-16 x -42621-24 x -28414-48 x -14207


How do I find the factor combinations of the number 681,936?

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 681,936, 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.

1 681,936
-1 -681,936

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 681,936.

Example:
1 x 681,936 = 681,936
and
-1 x -681,936 = 681,936
Notice both answers equal 681,936

With that explanation out of the way, let's continue. Next, we take the number 681,936 and divide it by 2:

681,936 ÷ 2 = 340,968

If the quotient is a whole number, then 2 and 340,968 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 2 340,968 681,936
-1 -2 -340,968 -681,936

Now, we try dividing 681,936 by 3:

681,936 ÷ 3 = 227,312

If the quotient is a whole number, then 3 and 227,312 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 3 227,312 340,968 681,936
-1 -2 -3 -227,312 -340,968 -681,936

Let's try dividing by 4:

681,936 ÷ 4 = 170,484

If the quotient is a whole number, then 4 and 170,484 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 3 4 170,484 227,312 340,968 681,936
-1 -2 -3 -4 -170,484 -227,312 -340,968 681,936
Keep dividing by the next highest number until you cannot divide anymore.

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

1234681216244814,20728,41442,62156,82885,242113,656170,484227,312340,968681,936
-1-2-3-4-6-8-12-16-24-48-14,207-28,414-42,621-56,828-85,242-113,656-170,484-227,312-340,968-681,936

More Examples

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