Q: What are the factor combinations of the number 10,810?

 A:
Positive:   1 x 108102 x 54055 x 216210 x 108123 x 47046 x 23547 x 23094 x 115
Negative: -1 x -10810-2 x -5405-5 x -2162-10 x -1081-23 x -470-46 x -235-47 x -230-94 x -115


How do I find the factor combinations of the number 10,810?

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 10,810, 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 10,810
-1 -10,810

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 10,810.

Example:
1 x 10,810 = 10,810
and
-1 x -10,810 = 10,810
Notice both answers equal 10,810

With that explanation out of the way, let's continue. Next, we take the number 10,810 and divide it by 2:

10,810 ÷ 2 = 5,405

If the quotient is a whole number, then 2 and 5,405 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 5,405 10,810
-1 -2 -5,405 -10,810

Now, we try dividing 10,810 by 3:

10,810 ÷ 3 = 3,603.3333

If the quotient is a whole number, then 3 and 3,603.3333 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 2 5,405 10,810
-1 -2 -5,405 -10,810

Let's try dividing by 4:

10,810 ÷ 4 = 2,702.5

If the quotient is a whole number, then 4 and 2,702.5 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 2 5,405 10,810
-1 -2 -5,405 10,810
Keep dividing by the next highest number until you cannot divide anymore.

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

12510234647941152302354701,0812,1625,40510,810
-1-2-5-10-23-46-47-94-115-230-235-470-1,081-2,162-5,405-10,810

More Examples

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