Q: What are the factor combinations of the number 97,972?

 A:
Positive:   1 x 979722 x 489864 x 244937 x 1399614 x 699828 x 3499
Negative: -1 x -97972-2 x -48986-4 x -24493-7 x -13996-14 x -6998-28 x -3499


How do I find the factor combinations of the number 97,972?

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 97,972, 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 97,972
-1 -97,972

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 97,972.

Example:
1 x 97,972 = 97,972
and
-1 x -97,972 = 97,972
Notice both answers equal 97,972

With that explanation out of the way, let's continue. Next, we take the number 97,972 and divide it by 2:

97,972 ÷ 2 = 48,986

If the quotient is a whole number, then 2 and 48,986 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 48,986 97,972
-1 -2 -48,986 -97,972

Now, we try dividing 97,972 by 3:

97,972 ÷ 3 = 32,657.3333

If the quotient is a whole number, then 3 and 32,657.3333 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 48,986 97,972
-1 -2 -48,986 -97,972

Let's try dividing by 4:

97,972 ÷ 4 = 24,493

If the quotient is a whole number, then 4 and 24,493 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 4 24,493 48,986 97,972
-1 -2 -4 -24,493 -48,986 97,972
Keep dividing by the next highest number until you cannot divide anymore.

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

124714283,4996,99813,99624,49348,98697,972
-1-2-4-7-14-28-3,499-6,998-13,996-24,493-48,986-97,972

More Examples

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