A:
Positive:
1 x 2203130155 x 4406260313 x 1694715565 x 3389431509 x 4328352545 x 865676617 x 332956659 x 33085
Negative:
-1 x -220313015-5 x -44062603-13 x -16947155-65 x -3389431-509 x -432835-2545 x -86567-6617 x -33295-6659 x -33085
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 220,313,015, 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 | 220,313,015 | |
| -1 | -220,313,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 220,313,015.
Example:
1 x 220,313,015 = 220,313,015
and
-1 x -220,313,015 = 220,313,015
Notice both answers equal 220,313,015
With that explanation out of the way, let's continue. Next, we take the number 220,313,015 and divide it by 2:
220,313,015 ÷ 2 = 110,156,507.5
If the quotient is a whole number, then 2 and 110,156,507.5 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 | 220,313,015 | |
| -1 | -220,313,015 |
Now, we try dividing 220,313,015 by 3:
220,313,015 ÷ 3 = 73,437,671.6667
If the quotient is a whole number, then 3 and 73,437,671.6667 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 | 220,313,015 | |
| -1 | -220,313,015 |
Let's try dividing by 4:
220,313,015 ÷ 4 = 55,078,253.75
If the quotient is a whole number, then 4 and 55,078,253.75 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 | 220,313,015 | |
| -1 | 220,313,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 509 | 2,545 | 6,617 | 6,659 | 33,085 | 33,295 | 86,567 | 432,835 | 3,389,431 | 16,947,155 | 44,062,603 | 220,313,015 |
| -1 | -5 | -13 | -65 | -509 | -2,545 | -6,617 | -6,659 | -33,085 | -33,295 | -86,567 | -432,835 | -3,389,431 | -16,947,155 | -44,062,603 | -220,313,015 |
Here are some more numbers to try:
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