Q: What are the factor combinations of the number 28,500,221?
A:
Positive:
1 x 285002214871 x 5851
Negative:
-1 x -28500221-4871 x -5851
A:
Positive:
1 x 285002214871 x 5851
Negative:
-1 x -28500221-4871 x -5851
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 28,500,221, 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 | 28,500,221 | |
-1 | -28,500,221 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,500,221.
Example:
1 x 28,500,221 = 28,500,221
and
-1 x -28,500,221 = 28,500,221
Notice both answers equal 28,500,221
With that explanation out of the way, let's continue. Next, we take the number 28,500,221 and divide it by 2:
28,500,221 ÷ 2 = 14,250,110.5
If the quotient is a whole number, then 2 and 14,250,110.5 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 | 28,500,221 | |
-1 | -28,500,221 |
Now, we try dividing 28,500,221 by 3:
28,500,221 ÷ 3 = 9,500,073.6667
If the quotient is a whole number, then 3 and 9,500,073.6667 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 | 28,500,221 | |
-1 | -28,500,221 |
Let's try dividing by 4:
28,500,221 ÷ 4 = 7,125,055.25
If the quotient is a whole number, then 4 and 7,125,055.25 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 | 28,500,221 | |
-1 | 28,500,221 |
If you did it right, you will end up with this table:
1 | 4,871 | 5,851 | 28,500,221 |
-1 | -4,871 | -5,851 | -28,500,221 |
Here are some more numbers to try:
Try the factor calculator