Q: What are the factor combinations of the number 221,416,637?
A:
Positive:
1 x 22141663713 x 17032049
Negative:
-1 x -221416637-13 x -17032049
A:
Positive:
1 x 22141663713 x 17032049
Negative:
-1 x -221416637-13 x -17032049
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 221,416,637, 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 | 221,416,637 | |
-1 | -221,416,637 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 221,416,637.
Example:
1 x 221,416,637 = 221,416,637
and
-1 x -221,416,637 = 221,416,637
Notice both answers equal 221,416,637
With that explanation out of the way, let's continue. Next, we take the number 221,416,637 and divide it by 2:
221,416,637 ÷ 2 = 110,708,318.5
If the quotient is a whole number, then 2 and 110,708,318.5 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 | 221,416,637 | |
-1 | -221,416,637 |
Now, we try dividing 221,416,637 by 3:
221,416,637 ÷ 3 = 73,805,545.6667
If the quotient is a whole number, then 3 and 73,805,545.6667 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 | 221,416,637 | |
-1 | -221,416,637 |
Let's try dividing by 4:
221,416,637 ÷ 4 = 55,354,159.25
If the quotient is a whole number, then 4 and 55,354,159.25 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 | 221,416,637 | |
-1 | 221,416,637 |
If you did it right, you will end up with this table:
1 | 13 | 17,032,049 | 221,416,637 |
-1 | -13 | -17,032,049 | -221,416,637 |
Here are some more numbers to try:
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