Q: What are the factor combinations of the number 306,905?
A:
Positive:
1 x 3069055 x 61381
Negative:
-1 x -306905-5 x -61381
A:
Positive:
1 x 3069055 x 61381
Negative:
-1 x -306905-5 x -61381
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 306,905, 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 | 306,905 | |
-1 | -306,905 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 306,905.
Example:
1 x 306,905 = 306,905
and
-1 x -306,905 = 306,905
Notice both answers equal 306,905
With that explanation out of the way, let's continue. Next, we take the number 306,905 and divide it by 2:
306,905 ÷ 2 = 153,452.5
If the quotient is a whole number, then 2 and 153,452.5 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 | 306,905 | |
-1 | -306,905 |
Now, we try dividing 306,905 by 3:
306,905 ÷ 3 = 102,301.6667
If the quotient is a whole number, then 3 and 102,301.6667 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 | 306,905 | |
-1 | -306,905 |
Let's try dividing by 4:
306,905 ÷ 4 = 76,726.25
If the quotient is a whole number, then 4 and 76,726.25 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 | 306,905 | |
-1 | 306,905 |
If you did it right, you will end up with this table:
1 | 5 | 61,381 | 306,905 |
-1 | -5 | -61,381 | -306,905 |
Here are some more numbers to try:
Try the factor calculator