A:
Positive:
1 x 22003221719 x 11580643151 x 1457167271 x 811927283 x 7774992869 x 766935149 x 427335377 x 40921
Negative:
-1 x -220032217-19 x -11580643-151 x -1457167-271 x -811927-283 x -777499-2869 x -76693-5149 x -42733-5377 x -40921
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 220,032,217, 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 | 220,032,217 | |
| -1 | -220,032,217 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 220,032,217.
Example:
1 x 220,032,217 = 220,032,217
and
-1 x -220,032,217 = 220,032,217
Notice both answers equal 220,032,217
With that explanation out of the way, let's continue. Next, we take the number 220,032,217 and divide it by 2:
220,032,217 ÷ 2 = 110,016,108.5
If the quotient is a whole number, then 2 and 110,016,108.5 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 | 220,032,217 | |
| -1 | -220,032,217 |
Now, we try dividing 220,032,217 by 3:
220,032,217 ÷ 3 = 73,344,072.3333
If the quotient is a whole number, then 3 and 73,344,072.3333 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 | 220,032,217 | |
| -1 | -220,032,217 |
Let's try dividing by 4:
220,032,217 ÷ 4 = 55,008,054.25
If the quotient is a whole number, then 4 and 55,008,054.25 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 | 220,032,217 | |
| -1 | 220,032,217 |
If you did it right, you will end up with this table:
| 1 | 19 | 151 | 271 | 283 | 2,869 | 5,149 | 5,377 | 40,921 | 42,733 | 76,693 | 777,499 | 811,927 | 1,457,167 | 11,580,643 | 220,032,217 |
| -1 | -19 | -151 | -271 | -283 | -2,869 | -5,149 | -5,377 | -40,921 | -42,733 | -76,693 | -777,499 | -811,927 | -1,457,167 | -11,580,643 | -220,032,217 |
Here are some more numbers to try:
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