Q: What are the factor combinations of the number 109,375?

 A:
Positive:   1 x 1093755 x 218757 x 1562525 x 437535 x 3125125 x 875175 x 625
Negative: -1 x -109375-5 x -21875-7 x -15625-25 x -4375-35 x -3125-125 x -875-175 x -625


How do I find the factor combinations of the number 109,375?

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 109,375, 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.

1 109,375
-1 -109,375

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 109,375.

Example:
1 x 109,375 = 109,375
and
-1 x -109,375 = 109,375
Notice both answers equal 109,375

With that explanation out of the way, let's continue. Next, we take the number 109,375 and divide it by 2:

109,375 ÷ 2 = 54,687.5

If the quotient is a whole number, then 2 and 54,687.5 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:

1 109,375
-1 -109,375

Now, we try dividing 109,375 by 3:

109,375 ÷ 3 = 36,458.3333

If the quotient is a whole number, then 3 and 36,458.3333 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:

1 109,375
-1 -109,375

Let's try dividing by 4:

109,375 ÷ 4 = 27,343.75

If the quotient is a whole number, then 4 and 27,343.75 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:

1 109,375
-1 109,375
Keep dividing by the next highest number until you cannot divide anymore.

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

15725351251756258753,1254,37515,62521,875109,375
-1-5-7-25-35-125-175-625-875-3,125-4,375-15,625-21,875-109,375

More Examples

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