A:
Positive:
1 x 1601722111 x 145611167 x 239063103 x 155507211 x 75911737 x 217331133 x 141372321 x 6901
Negative:
-1 x -16017221-11 x -1456111-67 x -239063-103 x -155507-211 x -75911-737 x -21733-1133 x -14137-2321 x -6901
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 16,017,221, 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 | 16,017,221 | |
| -1 | -16,017,221 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,017,221.
Example:
1 x 16,017,221 = 16,017,221
and
-1 x -16,017,221 = 16,017,221
Notice both answers equal 16,017,221
With that explanation out of the way, let's continue. Next, we take the number 16,017,221 and divide it by 2:
16,017,221 ÷ 2 = 8,008,610.5
If the quotient is a whole number, then 2 and 8,008,610.5 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 | 16,017,221 | |
| -1 | -16,017,221 |
Now, we try dividing 16,017,221 by 3:
16,017,221 ÷ 3 = 5,339,073.6667
If the quotient is a whole number, then 3 and 5,339,073.6667 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 | 16,017,221 | |
| -1 | -16,017,221 |
Let's try dividing by 4:
16,017,221 ÷ 4 = 4,004,305.25
If the quotient is a whole number, then 4 and 4,004,305.25 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 | 16,017,221 | |
| -1 | 16,017,221 |
If you did it right, you will end up with this table:
| 1 | 11 | 67 | 103 | 211 | 737 | 1,133 | 2,321 | 6,901 | 14,137 | 21,733 | 75,911 | 155,507 | 239,063 | 1,456,111 | 16,017,221 |
| -1 | -11 | -67 | -103 | -211 | -737 | -1,133 | -2,321 | -6,901 | -14,137 | -21,733 | -75,911 | -155,507 | -239,063 | -1,456,111 | -16,017,221 |
Here are some more numbers to try:
Try the factor calculator