Q: What are the factor combinations of the number 165,943?

 A:
Positive:   1 x 16594331 x 535353 x 3131101 x 1643
Negative: -1 x -165943-31 x -5353-53 x -3131-101 x -1643


How do I find the factor combinations of the number 165,943?

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 165,943, 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.

1 165,943
-1 -165,943

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 165,943.

Example:
1 x 165,943 = 165,943
and
-1 x -165,943 = 165,943
Notice both answers equal 165,943

With that explanation out of the way, let's continue. Next, we take the number 165,943 and divide it by 2:

165,943 ÷ 2 = 82,971.5

If the quotient is a whole number, then 2 and 82,971.5 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:

1 165,943
-1 -165,943

Now, we try dividing 165,943 by 3:

165,943 ÷ 3 = 55,314.3333

If the quotient is a whole number, then 3 and 55,314.3333 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:

1 165,943
-1 -165,943

Let's try dividing by 4:

165,943 ÷ 4 = 41,485.75

If the quotient is a whole number, then 4 and 41,485.75 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:

1 165,943
-1 165,943
Keep dividing by the next highest number until you cannot divide anymore.

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

131531011,6433,1315,353165,943
-1-31-53-101-1,643-3,131-5,353-165,943

More Examples

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