Q: What are the factor combinations of the number 717,237,417?

 A:
Positive:   1 x 7172374173 x 23907913913 x 5517210939 x 18390703
Negative: -1 x -717237417-3 x -239079139-13 x -55172109-39 x -18390703


How do I find the factor combinations of the number 717,237,417?

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 717,237,417, 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.

1 717,237,417
-1 -717,237,417

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 717,237,417.

Example:
1 x 717,237,417 = 717,237,417
and
-1 x -717,237,417 = 717,237,417
Notice both answers equal 717,237,417

With that explanation out of the way, let's continue. Next, we take the number 717,237,417 and divide it by 2:

717,237,417 ÷ 2 = 358,618,708.5

If the quotient is a whole number, then 2 and 358,618,708.5 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:

1 717,237,417
-1 -717,237,417

Now, we try dividing 717,237,417 by 3:

717,237,417 ÷ 3 = 239,079,139

If the quotient is a whole number, then 3 and 239,079,139 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 3 239,079,139 717,237,417
-1 -3 -239,079,139 -717,237,417

Let's try dividing by 4:

717,237,417 ÷ 4 = 179,309,354.25

If the quotient is a whole number, then 4 and 179,309,354.25 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 3 239,079,139 717,237,417
-1 -3 -239,079,139 717,237,417
Keep dividing by the next highest number until you cannot divide anymore.

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

13133918,390,70355,172,109239,079,139717,237,417
-1-3-13-39-18,390,703-55,172,109-239,079,139-717,237,417

More Examples

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