Q: What are the factor combinations of the number 874,939?

 A:
Positive:   1 x 87493913 x 6730317 x 5146737 x 23647107 x 8177221 x 3959481 x 1819629 x 1391
Negative: -1 x -874939-13 x -67303-17 x -51467-37 x -23647-107 x -8177-221 x -3959-481 x -1819-629 x -1391


How do I find the factor combinations of the number 874,939?

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 874,939, 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.

1 874,939
-1 -874,939

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 874,939.

Example:
1 x 874,939 = 874,939
and
-1 x -874,939 = 874,939
Notice both answers equal 874,939

With that explanation out of the way, let's continue. Next, we take the number 874,939 and divide it by 2:

874,939 ÷ 2 = 437,469.5

If the quotient is a whole number, then 2 and 437,469.5 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:

1 874,939
-1 -874,939

Now, we try dividing 874,939 by 3:

874,939 ÷ 3 = 291,646.3333

If the quotient is a whole number, then 3 and 291,646.3333 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:

1 874,939
-1 -874,939

Let's try dividing by 4:

874,939 ÷ 4 = 218,734.75

If the quotient is a whole number, then 4 and 218,734.75 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:

1 874,939
-1 874,939
Keep dividing by the next highest number until you cannot divide anymore.

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

11317371072214816291,3911,8193,9598,17723,64751,46767,303874,939
-1-13-17-37-107-221-481-629-1,391-1,819-3,959-8,177-23,647-51,467-67,303-874,939

More Examples

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