Q: What are the factor combinations of the number 38,703,719?

 A:
Positive:   1 x 3870371929 x 1334611107 x 3617173103 x 12473
Negative: -1 x -38703719-29 x -1334611-107 x -361717-3103 x -12473


How do I find the factor combinations of the number 38,703,719?

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 38,703,719, 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 38,703,719
-1 -38,703,719

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 38,703,719.

Example:
1 x 38,703,719 = 38,703,719
and
-1 x -38,703,719 = 38,703,719
Notice both answers equal 38,703,719

With that explanation out of the way, let's continue. Next, we take the number 38,703,719 and divide it by 2:

38,703,719 ÷ 2 = 19,351,859.5

If the quotient is a whole number, then 2 and 19,351,859.5 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 38,703,719
-1 -38,703,719

Now, we try dividing 38,703,719 by 3:

38,703,719 ÷ 3 = 12,901,239.6667

If the quotient is a whole number, then 3 and 12,901,239.6667 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 38,703,719
-1 -38,703,719

Let's try dividing by 4:

38,703,719 ÷ 4 = 9,675,929.75

If the quotient is a whole number, then 4 and 9,675,929.75 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 38,703,719
-1 38,703,719
Keep dividing by the next highest number until you cannot divide anymore.

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

1291073,10312,473361,7171,334,61138,703,719
-1-29-107-3,103-12,473-361,717-1,334,611-38,703,719

More Examples

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