Q: What are the factor combinations of the number 272,987?

 A:
Positive:   1 x 27298711 x 2481713 x 2099923 x 1186983 x 3289143 x 1909253 x 1079299 x 913
Negative: -1 x -272987-11 x -24817-13 x -20999-23 x -11869-83 x -3289-143 x -1909-253 x -1079-299 x -913


How do I find the factor combinations of the number 272,987?

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 272,987, 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.

1 272,987
-1 -272,987

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 272,987.

Example:
1 x 272,987 = 272,987
and
-1 x -272,987 = 272,987
Notice both answers equal 272,987

With that explanation out of the way, let's continue. Next, we take the number 272,987 and divide it by 2:

272,987 ÷ 2 = 136,493.5

If the quotient is a whole number, then 2 and 136,493.5 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:

1 272,987
-1 -272,987

Now, we try dividing 272,987 by 3:

272,987 ÷ 3 = 90,995.6667

If the quotient is a whole number, then 3 and 90,995.6667 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:

1 272,987
-1 -272,987

Let's try dividing by 4:

272,987 ÷ 4 = 68,246.75

If the quotient is a whole number, then 4 and 68,246.75 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:

1 272,987
-1 272,987
Keep dividing by the next highest number until you cannot divide anymore.

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

1111323831432532999131,0791,9093,28911,86920,99924,817272,987
-1-11-13-23-83-143-253-299-913-1,079-1,909-3,289-11,869-20,999-24,817-272,987

More Examples

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