Q: What are the factor combinations of the number 289,668?

 A:
Positive:   1 x 2896682 x 1448343 x 965564 x 724176 x 4827812 x 24139101 x 2868202 x 1434239 x 1212303 x 956404 x 717478 x 606
Negative: -1 x -289668-2 x -144834-3 x -96556-4 x -72417-6 x -48278-12 x -24139-101 x -2868-202 x -1434-239 x -1212-303 x -956-404 x -717-478 x -606


How do I find the factor combinations of the number 289,668?

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 289,668, 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.

1 289,668
-1 -289,668

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 289,668.

Example:
1 x 289,668 = 289,668
and
-1 x -289,668 = 289,668
Notice both answers equal 289,668

With that explanation out of the way, let's continue. Next, we take the number 289,668 and divide it by 2:

289,668 ÷ 2 = 144,834

If the quotient is a whole number, then 2 and 144,834 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 2 144,834 289,668
-1 -2 -144,834 -289,668

Now, we try dividing 289,668 by 3:

289,668 ÷ 3 = 96,556

If the quotient is a whole number, then 3 and 96,556 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 3 96,556 144,834 289,668
-1 -2 -3 -96,556 -144,834 -289,668

Let's try dividing by 4:

289,668 ÷ 4 = 72,417

If the quotient is a whole number, then 4 and 72,417 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 3 4 72,417 96,556 144,834 289,668
-1 -2 -3 -4 -72,417 -96,556 -144,834 289,668
Keep dividing by the next highest number until you cannot divide anymore.

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

12346121012022393034044786067179561,2121,4342,86824,13948,27872,41796,556144,834289,668
-1-2-3-4-6-12-101-202-239-303-404-478-606-717-956-1,212-1,434-2,868-24,139-48,278-72,417-96,556-144,834-289,668

More Examples

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