Q: What are the factor combinations of the number 120,835?

 A:
Positive:   1 x 1208355 x 2416711 x 1098513 x 929555 x 219765 x 1859143 x 845169 x 715
Negative: -1 x -120835-5 x -24167-11 x -10985-13 x -9295-55 x -2197-65 x -1859-143 x -845-169 x -715


How do I find the factor combinations of the number 120,835?

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 120,835, 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.

1 120,835
-1 -120,835

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 120,835.

Example:
1 x 120,835 = 120,835
and
-1 x -120,835 = 120,835
Notice both answers equal 120,835

With that explanation out of the way, let's continue. Next, we take the number 120,835 and divide it by 2:

120,835 ÷ 2 = 60,417.5

If the quotient is a whole number, then 2 and 60,417.5 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:

1 120,835
-1 -120,835

Now, we try dividing 120,835 by 3:

120,835 ÷ 3 = 40,278.3333

If the quotient is a whole number, then 3 and 40,278.3333 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:

1 120,835
-1 -120,835

Let's try dividing by 4:

120,835 ÷ 4 = 30,208.75

If the quotient is a whole number, then 4 and 30,208.75 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:

1 120,835
-1 120,835
Keep dividing by the next highest number until you cannot divide anymore.

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

15111355651431697158451,8592,1979,29510,98524,167120,835
-1-5-11-13-55-65-143-169-715-845-1,859-2,197-9,295-10,985-24,167-120,835

More Examples

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