Q: What are the factor combinations of the number 351,368?

 A:
Positive:   1 x 3513682 x 1756844 x 878428 x 43921167 x 2104263 x 1336334 x 1052526 x 668
Negative: -1 x -351368-2 x -175684-4 x -87842-8 x -43921-167 x -2104-263 x -1336-334 x -1052-526 x -668


How do I find the factor combinations of the number 351,368?

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 351,368, 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.

1 351,368
-1 -351,368

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 351,368.

Example:
1 x 351,368 = 351,368
and
-1 x -351,368 = 351,368
Notice both answers equal 351,368

With that explanation out of the way, let's continue. Next, we take the number 351,368 and divide it by 2:

351,368 ÷ 2 = 175,684

If the quotient is a whole number, then 2 and 175,684 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 2 175,684 351,368
-1 -2 -175,684 -351,368

Now, we try dividing 351,368 by 3:

351,368 ÷ 3 = 117,122.6667

If the quotient is a whole number, then 3 and 117,122.6667 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 2 175,684 351,368
-1 -2 -175,684 -351,368

Let's try dividing by 4:

351,368 ÷ 4 = 87,842

If the quotient is a whole number, then 4 and 87,842 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 87,842 175,684 351,368
-1 -2 -4 -87,842 -175,684 351,368
Keep dividing by the next highest number until you cannot divide anymore.

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

12481672633345266681,0521,3362,10443,92187,842175,684351,368
-1-2-4-8-167-263-334-526-668-1,052-1,336-2,104-43,921-87,842-175,684-351,368

More Examples

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