Q: What are the factor combinations of the number 197,436?

 A:
Positive:   1 x 1974362 x 987183 x 658124 x 493596 x 3290612 x 16453
Negative: -1 x -197436-2 x -98718-3 x -65812-4 x -49359-6 x -32906-12 x -16453


How do I find the factor combinations of the number 197,436?

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 197,436, 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.

1 197,436
-1 -197,436

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 197,436.

Example:
1 x 197,436 = 197,436
and
-1 x -197,436 = 197,436
Notice both answers equal 197,436

With that explanation out of the way, let's continue. Next, we take the number 197,436 and divide it by 2:

197,436 ÷ 2 = 98,718

If the quotient is a whole number, then 2 and 98,718 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 98,718 197,436
-1 -2 -98,718 -197,436

Now, we try dividing 197,436 by 3:

197,436 ÷ 3 = 65,812

If the quotient is a whole number, then 3 and 65,812 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 65,812 98,718 197,436
-1 -2 -3 -65,812 -98,718 -197,436

Let's try dividing by 4:

197,436 ÷ 4 = 49,359

If the quotient is a whole number, then 4 and 49,359 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 49,359 65,812 98,718 197,436
-1 -2 -3 -4 -49,359 -65,812 -98,718 197,436
Keep dividing by the next highest number until you cannot divide anymore.

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

123461216,45332,90649,35965,81298,718197,436
-1-2-3-4-6-12-16,453-32,906-49,359-65,812-98,718-197,436

More Examples

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