Q: What are the factor combinations of the number 157,512?

 A:
Positive:   1 x 1575122 x 787563 x 525044 x 393786 x 262528 x 1968912 x 1312624 x 6563
Negative: -1 x -157512-2 x -78756-3 x -52504-4 x -39378-6 x -26252-8 x -19689-12 x -13126-24 x -6563


How do I find the factor combinations of the number 157,512?

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 157,512, 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.

1 157,512
-1 -157,512

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 157,512.

Example:
1 x 157,512 = 157,512
and
-1 x -157,512 = 157,512
Notice both answers equal 157,512

With that explanation out of the way, let's continue. Next, we take the number 157,512 and divide it by 2:

157,512 ÷ 2 = 78,756

If the quotient is a whole number, then 2 and 78,756 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 78,756 157,512
-1 -2 -78,756 -157,512

Now, we try dividing 157,512 by 3:

157,512 ÷ 3 = 52,504

If the quotient is a whole number, then 3 and 52,504 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 52,504 78,756 157,512
-1 -2 -3 -52,504 -78,756 -157,512

Let's try dividing by 4:

157,512 ÷ 4 = 39,378

If the quotient is a whole number, then 4 and 39,378 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 39,378 52,504 78,756 157,512
-1 -2 -3 -4 -39,378 -52,504 -78,756 157,512
Keep dividing by the next highest number until you cannot divide anymore.

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

12346812246,56313,12619,68926,25239,37852,50478,756157,512
-1-2-3-4-6-8-12-24-6,563-13,126-19,689-26,252-39,378-52,504-78,756-157,512

More Examples

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