Q: What are the factor combinations of the number 869,417?

 A:
Positive:   1 x 86941743 x 20219
Negative: -1 x -869417-43 x -20219


How do I find the factor combinations of the number 869,417?

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 869,417, 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.

1 869,417
-1 -869,417

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 869,417.

Example:
1 x 869,417 = 869,417
and
-1 x -869,417 = 869,417
Notice both answers equal 869,417

With that explanation out of the way, let's continue. Next, we take the number 869,417 and divide it by 2:

869,417 ÷ 2 = 434,708.5

If the quotient is a whole number, then 2 and 434,708.5 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:

1 869,417
-1 -869,417

Now, we try dividing 869,417 by 3:

869,417 ÷ 3 = 289,805.6667

If the quotient is a whole number, then 3 and 289,805.6667 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:

1 869,417
-1 -869,417

Let's try dividing by 4:

869,417 ÷ 4 = 217,354.25

If the quotient is a whole number, then 4 and 217,354.25 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:

1 869,417
-1 869,417
Keep dividing by the next highest number until you cannot divide anymore.

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

14320,219869,417
-1-43-20,219-869,417

More Examples

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