A:
Positive:
1 x 21624615111 x 1965874159 x 3665189101 x 2141051649 x 3331991111 x 1946413299 x 655495959 x 36289
Negative:
-1 x -216246151-11 x -19658741-59 x -3665189-101 x -2141051-649 x -333199-1111 x -194641-3299 x -65549-5959 x -36289
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 216,246,151, 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 | 216,246,151 | |
| -1 | -216,246,151 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 216,246,151.
Example:
1 x 216,246,151 = 216,246,151
and
-1 x -216,246,151 = 216,246,151
Notice both answers equal 216,246,151
With that explanation out of the way, let's continue. Next, we take the number 216,246,151 and divide it by 2:
216,246,151 ÷ 2 = 108,123,075.5
If the quotient is a whole number, then 2 and 108,123,075.5 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 | 216,246,151 | |
| -1 | -216,246,151 |
Now, we try dividing 216,246,151 by 3:
216,246,151 ÷ 3 = 72,082,050.3333
If the quotient is a whole number, then 3 and 72,082,050.3333 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 | 216,246,151 | |
| -1 | -216,246,151 |
Let's try dividing by 4:
216,246,151 ÷ 4 = 54,061,537.75
If the quotient is a whole number, then 4 and 54,061,537.75 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 | 216,246,151 | |
| -1 | 216,246,151 |
If you did it right, you will end up with this table:
| 1 | 11 | 59 | 101 | 649 | 1,111 | 3,299 | 5,959 | 36,289 | 65,549 | 194,641 | 333,199 | 2,141,051 | 3,665,189 | 19,658,741 | 216,246,151 |
| -1 | -11 | -59 | -101 | -649 | -1,111 | -3,299 | -5,959 | -36,289 | -65,549 | -194,641 | -333,199 | -2,141,051 | -3,665,189 | -19,658,741 | -216,246,151 |
Here are some more numbers to try:
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