Q: What are the factor combinations of the number 31,307,779?
A:
Positive:
1 x 3130777979 x 396301
Negative:
-1 x -31307779-79 x -396301
A:
Positive:
1 x 3130777979 x 396301
Negative:
-1 x -31307779-79 x -396301
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 31,307,779, 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 | 31,307,779 | |
-1 | -31,307,779 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,307,779.
Example:
1 x 31,307,779 = 31,307,779
and
-1 x -31,307,779 = 31,307,779
Notice both answers equal 31,307,779
With that explanation out of the way, let's continue. Next, we take the number 31,307,779 and divide it by 2:
31,307,779 ÷ 2 = 15,653,889.5
If the quotient is a whole number, then 2 and 15,653,889.5 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 | 31,307,779 | |
-1 | -31,307,779 |
Now, we try dividing 31,307,779 by 3:
31,307,779 ÷ 3 = 10,435,926.3333
If the quotient is a whole number, then 3 and 10,435,926.3333 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 | 31,307,779 | |
-1 | -31,307,779 |
Let's try dividing by 4:
31,307,779 ÷ 4 = 7,826,944.75
If the quotient is a whole number, then 4 and 7,826,944.75 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 | 31,307,779 | |
-1 | 31,307,779 |
If you did it right, you will end up with this table:
1 | 79 | 396,301 | 31,307,779 |
-1 | -79 | -396,301 | -31,307,779 |
Here are some more numbers to try:
Try the factor calculator