Q: What are the factor combinations of the number 12,527,501?

 A:
Positive:   1 x 125275017 x 1789643157 x 797931099 x 11399
Negative: -1 x -12527501-7 x -1789643-157 x -79793-1099 x -11399


How do I find the factor combinations of the number 12,527,501?

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 12,527,501, 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 12,527,501
-1 -12,527,501

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 12,527,501.

Example:
1 x 12,527,501 = 12,527,501
and
-1 x -12,527,501 = 12,527,501
Notice both answers equal 12,527,501

With that explanation out of the way, let's continue. Next, we take the number 12,527,501 and divide it by 2:

12,527,501 ÷ 2 = 6,263,750.5

If the quotient is a whole number, then 2 and 6,263,750.5 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 12,527,501
-1 -12,527,501

Now, we try dividing 12,527,501 by 3:

12,527,501 ÷ 3 = 4,175,833.6667

If the quotient is a whole number, then 3 and 4,175,833.6667 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 12,527,501
-1 -12,527,501

Let's try dividing by 4:

12,527,501 ÷ 4 = 3,131,875.25

If the quotient is a whole number, then 4 and 3,131,875.25 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 12,527,501
-1 12,527,501
Keep dividing by the next highest number until you cannot divide anymore.

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

171571,09911,39979,7931,789,64312,527,501
-1-7-157-1,099-11,399-79,793-1,789,643-12,527,501

More Examples

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