Q: What are the factor combinations of the number 394,565?

 A:
Positive:   1 x 3945655 x 7891323 x 1715547 x 839573 x 5405115 x 3431235 x 1679365 x 1081
Negative: -1 x -394565-5 x -78913-23 x -17155-47 x -8395-73 x -5405-115 x -3431-235 x -1679-365 x -1081


How do I find the factor combinations of the number 394,565?

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 394,565, 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.

1 394,565
-1 -394,565

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 394,565.

Example:
1 x 394,565 = 394,565
and
-1 x -394,565 = 394,565
Notice both answers equal 394,565

With that explanation out of the way, let's continue. Next, we take the number 394,565 and divide it by 2:

394,565 ÷ 2 = 197,282.5

If the quotient is a whole number, then 2 and 197,282.5 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:

1 394,565
-1 -394,565

Now, we try dividing 394,565 by 3:

394,565 ÷ 3 = 131,521.6667

If the quotient is a whole number, then 3 and 131,521.6667 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:

1 394,565
-1 -394,565

Let's try dividing by 4:

394,565 ÷ 4 = 98,641.25

If the quotient is a whole number, then 4 and 98,641.25 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:

1 394,565
-1 394,565
Keep dividing by the next highest number until you cannot divide anymore.

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

152347731152353651,0811,6793,4315,4058,39517,15578,913394,565
-1-5-23-47-73-115-235-365-1,081-1,679-3,431-5,405-8,395-17,155-78,913-394,565

More Examples

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