Q: What are the factor combinations of the number 30,312,331?
A:
Positive:
1 x 303123317 x 433033349 x 618619
Negative:
-1 x -30312331-7 x -4330333-49 x -618619
A:
Positive:
1 x 303123317 x 433033349 x 618619
Negative:
-1 x -30312331-7 x -4330333-49 x -618619
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 30,312,331, 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 | 30,312,331 | |
-1 | -30,312,331 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,312,331.
Example:
1 x 30,312,331 = 30,312,331
and
-1 x -30,312,331 = 30,312,331
Notice both answers equal 30,312,331
With that explanation out of the way, let's continue. Next, we take the number 30,312,331 and divide it by 2:
30,312,331 ÷ 2 = 15,156,165.5
If the quotient is a whole number, then 2 and 15,156,165.5 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 | 30,312,331 | |
-1 | -30,312,331 |
Now, we try dividing 30,312,331 by 3:
30,312,331 ÷ 3 = 10,104,110.3333
If the quotient is a whole number, then 3 and 10,104,110.3333 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 | 30,312,331 | |
-1 | -30,312,331 |
Let's try dividing by 4:
30,312,331 ÷ 4 = 7,578,082.75
If the quotient is a whole number, then 4 and 7,578,082.75 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 | 30,312,331 | |
-1 | 30,312,331 |
If you did it right, you will end up with this table:
1 | 7 | 49 | 618,619 | 4,330,333 | 30,312,331 |
-1 | -7 | -49 | -618,619 | -4,330,333 | -30,312,331 |
Here are some more numbers to try:
Try the factor calculator