Q: What are the factor combinations of the number 20,485,349?
A:
Positive:
1 x 204853494027 x 5087
Negative:
-1 x -20485349-4027 x -5087
A:
Positive:
1 x 204853494027 x 5087
Negative:
-1 x -20485349-4027 x -5087
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 20,485,349, 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 | 20,485,349 | |
-1 | -20,485,349 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,485,349.
Example:
1 x 20,485,349 = 20,485,349
and
-1 x -20,485,349 = 20,485,349
Notice both answers equal 20,485,349
With that explanation out of the way, let's continue. Next, we take the number 20,485,349 and divide it by 2:
20,485,349 ÷ 2 = 10,242,674.5
If the quotient is a whole number, then 2 and 10,242,674.5 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 | 20,485,349 | |
-1 | -20,485,349 |
Now, we try dividing 20,485,349 by 3:
20,485,349 ÷ 3 = 6,828,449.6667
If the quotient is a whole number, then 3 and 6,828,449.6667 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 | 20,485,349 | |
-1 | -20,485,349 |
Let's try dividing by 4:
20,485,349 ÷ 4 = 5,121,337.25
If the quotient is a whole number, then 4 and 5,121,337.25 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 | 20,485,349 | |
-1 | 20,485,349 |
If you did it right, you will end up with this table:
1 | 4,027 | 5,087 | 20,485,349 |
-1 | -4,027 | -5,087 | -20,485,349 |
Here are some more numbers to try:
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