A:
Positive:
1 x 22032101311 x 2002918389 x 2475517313 x 703901719 x 306427979 x 2250473443 x 639917909 x 27857
Negative:
-1 x -220321013-11 x -20029183-89 x -2475517-313 x -703901-719 x -306427-979 x -225047-3443 x -63991-7909 x -27857
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 220,321,013, 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 | 220,321,013 | |
| -1 | -220,321,013 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 220,321,013.
Example:
1 x 220,321,013 = 220,321,013
and
-1 x -220,321,013 = 220,321,013
Notice both answers equal 220,321,013
With that explanation out of the way, let's continue. Next, we take the number 220,321,013 and divide it by 2:
220,321,013 ÷ 2 = 110,160,506.5
If the quotient is a whole number, then 2 and 110,160,506.5 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 | 220,321,013 | |
| -1 | -220,321,013 |
Now, we try dividing 220,321,013 by 3:
220,321,013 ÷ 3 = 73,440,337.6667
If the quotient is a whole number, then 3 and 73,440,337.6667 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 | 220,321,013 | |
| -1 | -220,321,013 |
Let's try dividing by 4:
220,321,013 ÷ 4 = 55,080,253.25
If the quotient is a whole number, then 4 and 55,080,253.25 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 | 220,321,013 | |
| -1 | 220,321,013 |
If you did it right, you will end up with this table:
| 1 | 11 | 89 | 313 | 719 | 979 | 3,443 | 7,909 | 27,857 | 63,991 | 225,047 | 306,427 | 703,901 | 2,475,517 | 20,029,183 | 220,321,013 |
| -1 | -11 | -89 | -313 | -719 | -979 | -3,443 | -7,909 | -27,857 | -63,991 | -225,047 | -306,427 | -703,901 | -2,475,517 | -20,029,183 | -220,321,013 |
Here are some more numbers to try:
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