Q: What are the factor combinations of the number 245,576?

 A:
Positive:   1 x 2455762 x 1227884 x 613948 x 30697
Negative: -1 x -245576-2 x -122788-4 x -61394-8 x -30697


How do I find the factor combinations of the number 245,576?

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 245,576, 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.

1 245,576
-1 -245,576

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 245,576.

Example:
1 x 245,576 = 245,576
and
-1 x -245,576 = 245,576
Notice both answers equal 245,576

With that explanation out of the way, let's continue. Next, we take the number 245,576 and divide it by 2:

245,576 ÷ 2 = 122,788

If the quotient is a whole number, then 2 and 122,788 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 2 122,788 245,576
-1 -2 -122,788 -245,576

Now, we try dividing 245,576 by 3:

245,576 ÷ 3 = 81,858.6667

If the quotient is a whole number, then 3 and 81,858.6667 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 2 122,788 245,576
-1 -2 -122,788 -245,576

Let's try dividing by 4:

245,576 ÷ 4 = 61,394

If the quotient is a whole number, then 4 and 61,394 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 61,394 122,788 245,576
-1 -2 -4 -61,394 -122,788 245,576
Keep dividing by the next highest number until you cannot divide anymore.

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

124830,69761,394122,788245,576
-1-2-4-8-30,697-61,394-122,788-245,576

More Examples

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