Q: What are the factor combinations of the number 30,113,909?
A:
Positive:
1 x 301139097 x 4301987
Negative:
-1 x -30113909-7 x -4301987
A:
Positive:
1 x 301139097 x 4301987
Negative:
-1 x -30113909-7 x -4301987
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 30,113,909, 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 | 30,113,909 | |
-1 | -30,113,909 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,113,909.
Example:
1 x 30,113,909 = 30,113,909
and
-1 x -30,113,909 = 30,113,909
Notice both answers equal 30,113,909
With that explanation out of the way, let's continue. Next, we take the number 30,113,909 and divide it by 2:
30,113,909 ÷ 2 = 15,056,954.5
If the quotient is a whole number, then 2 and 15,056,954.5 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 | 30,113,909 | |
-1 | -30,113,909 |
Now, we try dividing 30,113,909 by 3:
30,113,909 ÷ 3 = 10,037,969.6667
If the quotient is a whole number, then 3 and 10,037,969.6667 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 | 30,113,909 | |
-1 | -30,113,909 |
Let's try dividing by 4:
30,113,909 ÷ 4 = 7,528,477.25
If the quotient is a whole number, then 4 and 7,528,477.25 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 | 30,113,909 | |
-1 | 30,113,909 |
If you did it right, you will end up with this table:
1 | 7 | 4,301,987 | 30,113,909 |
-1 | -7 | -4,301,987 | -30,113,909 |
Here are some more numbers to try:
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