Q: What are the factor combinations of the number 2,261?

 A:
Positive:   1 x 22617 x 32317 x 13319 x 119
Negative: -1 x -2261-7 x -323-17 x -133-19 x -119


How do I find the factor combinations of the number 2,261?

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 2,261, 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 2,261
-1 -2,261

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 2,261.

Example:
1 x 2,261 = 2,261
and
-1 x -2,261 = 2,261
Notice both answers equal 2,261

With that explanation out of the way, let's continue. Next, we take the number 2,261 and divide it by 2:

2,261 ÷ 2 = 1,130.5

If the quotient is a whole number, then 2 and 1,130.5 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 2,261
-1 -2,261

Now, we try dividing 2,261 by 3:

2,261 ÷ 3 = 753.6667

If the quotient is a whole number, then 3 and 753.6667 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 2,261
-1 -2,261

Let's try dividing by 4:

2,261 ÷ 4 = 565.25

If the quotient is a whole number, then 4 and 565.25 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 2,261
-1 2,261
Keep dividing by the next highest number until you cannot divide anymore.

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

1717191191333232,261
-1-7-17-19-119-133-323-2,261

More Examples

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