Q: What are the factor combinations of the number 105,515?

 A:
Positive:   1 x 1055155 x 2110347 x 2245235 x 449
Negative: -1 x -105515-5 x -21103-47 x -2245-235 x -449


How do I find the factor combinations of the number 105,515?

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 105,515, 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.

1 105,515
-1 -105,515

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 105,515.

Example:
1 x 105,515 = 105,515
and
-1 x -105,515 = 105,515
Notice both answers equal 105,515

With that explanation out of the way, let's continue. Next, we take the number 105,515 and divide it by 2:

105,515 ÷ 2 = 52,757.5

If the quotient is a whole number, then 2 and 52,757.5 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:

1 105,515
-1 -105,515

Now, we try dividing 105,515 by 3:

105,515 ÷ 3 = 35,171.6667

If the quotient is a whole number, then 3 and 35,171.6667 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:

1 105,515
-1 -105,515

Let's try dividing by 4:

105,515 ÷ 4 = 26,378.75

If the quotient is a whole number, then 4 and 26,378.75 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:

1 105,515
-1 105,515
Keep dividing by the next highest number until you cannot divide anymore.

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

15472354492,24521,103105,515
-1-5-47-235-449-2,245-21,103-105,515

More Examples

Here are some more numbers to try:

Try the factor calculator

Explore more about the number 105,515:


Ask a Question