Q: What are the factor combinations of the number 201,021,109?
A:
Positive:
1 x 20102110979 x 2544571
Negative:
-1 x -201021109-79 x -2544571
A:
Positive:
1 x 20102110979 x 2544571
Negative:
-1 x -201021109-79 x -2544571
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 201,021,109, it is easier to work with a table - it's called factoring from the outside in.
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 | 201,021,109 | |
-1 | -201,021,109 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 201,021,109.
Example:
1 x 201,021,109 = 201,021,109
and
-1 x -201,021,109 = 201,021,109
Notice both answers equal 201,021,109
With that explanation out of the way, let's continue. Next, we take the number 201,021,109 and divide it by 2:
201,021,109 ÷ 2 = 100,510,554.5
If the quotient is a whole number, then 2 and 100,510,554.5 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 | 201,021,109 | |
-1 | -201,021,109 |
Now, we try dividing 201,021,109 by 3:
201,021,109 ÷ 3 = 67,007,036.3333
If the quotient is a whole number, then 3 and 67,007,036.3333 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 | 201,021,109 | |
-1 | -201,021,109 |
Let's try dividing by 4:
201,021,109 ÷ 4 = 50,255,277.25
If the quotient is a whole number, then 4 and 50,255,277.25 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 | 201,021,109 | |
-1 | 201,021,109 |
If you did it right, you will end up with this table:
1 | 79 | 2,544,571 | 201,021,109 |
-1 | -79 | -2,544,571 | -201,021,109 |
Here are some more numbers to try:
Try the factor calculator