Q: What are the factor combinations of the number 155,100,532?

 A:
Positive:   1 x 1551005322 x 775502664 x 387751332861 x 542125722 x 2710611444 x 13553
Negative: -1 x -155100532-2 x -77550266-4 x -38775133-2861 x -54212-5722 x -27106-11444 x -13553


How do I find the factor combinations of the number 155,100,532?

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 155,100,532, 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.

1 155,100,532
-1 -155,100,532

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 155,100,532.

Example:
1 x 155,100,532 = 155,100,532
and
-1 x -155,100,532 = 155,100,532
Notice both answers equal 155,100,532

With that explanation out of the way, let's continue. Next, we take the number 155,100,532 and divide it by 2:

155,100,532 ÷ 2 = 77,550,266

If the quotient is a whole number, then 2 and 77,550,266 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 77,550,266 155,100,532
-1 -2 -77,550,266 -155,100,532

Now, we try dividing 155,100,532 by 3:

155,100,532 ÷ 3 = 51,700,177.3333

If the quotient is a whole number, then 3 and 51,700,177.3333 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 77,550,266 155,100,532
-1 -2 -77,550,266 -155,100,532

Let's try dividing by 4:

155,100,532 ÷ 4 = 38,775,133

If the quotient is a whole number, then 4 and 38,775,133 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 38,775,133 77,550,266 155,100,532
-1 -2 -4 -38,775,133 -77,550,266 155,100,532
Keep dividing by the next highest number until you cannot divide anymore.

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

1242,8615,72211,44413,55327,10654,21238,775,13377,550,266155,100,532
-1-2-4-2,861-5,722-11,444-13,553-27,106-54,212-38,775,133-77,550,266-155,100,532

More Examples

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