Q: What are the factor combinations of the number 3,678,521?

 A:
Positive:   1 x 36785217 x 52550311 x 33441143 x 8554777 x 47773101 x 36421121 x 30401301 x 12221473 x 7777707 x 5203847 x 43431111 x 3311
Negative: -1 x -3678521-7 x -525503-11 x -334411-43 x -85547-77 x -47773-101 x -36421-121 x -30401-301 x -12221-473 x -7777-707 x -5203-847 x -4343-1111 x -3311


How do I find the factor combinations of the number 3,678,521?

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 3,678,521, 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 3,678,521
-1 -3,678,521

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 3,678,521.

Example:
1 x 3,678,521 = 3,678,521
and
-1 x -3,678,521 = 3,678,521
Notice both answers equal 3,678,521

With that explanation out of the way, let's continue. Next, we take the number 3,678,521 and divide it by 2:

3,678,521 ÷ 2 = 1,839,260.5

If the quotient is a whole number, then 2 and 1,839,260.5 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 3,678,521
-1 -3,678,521

Now, we try dividing 3,678,521 by 3:

3,678,521 ÷ 3 = 1,226,173.6667

If the quotient is a whole number, then 3 and 1,226,173.6667 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 3,678,521
-1 -3,678,521

Let's try dividing by 4:

3,678,521 ÷ 4 = 919,630.25

If the quotient is a whole number, then 4 and 919,630.25 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 3,678,521
-1 3,678,521
Keep dividing by the next highest number until you cannot divide anymore.

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

171143771011213014737078471,1113,3114,3435,2037,77712,22130,40136,42147,77385,547334,411525,5033,678,521
-1-7-11-43-77-101-121-301-473-707-847-1,111-3,311-4,343-5,203-7,777-12,221-30,401-36,421-47,773-85,547-334,411-525,503-3,678,521

More Examples

Here are some more numbers to try:

Try the factor calculator

Explore more about the number 3,678,521:


Ask a Question