A:
Positive:
1 x 6665165155 x 1333033037 x 9521664535 x 19043329827 x 8059454135 x 1611895789 x 11513523027 x 28945
Negative:
-1 x -666516515-5 x -133303303-7 x -95216645-35 x -19043329-827 x -805945-4135 x -161189-5789 x -115135-23027 x -28945
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 666,516,515, 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 | 666,516,515 | |
| -1 | -666,516,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 666,516,515.
Example:
1 x 666,516,515 = 666,516,515
and
-1 x -666,516,515 = 666,516,515
Notice both answers equal 666,516,515
With that explanation out of the way, let's continue. Next, we take the number 666,516,515 and divide it by 2:
666,516,515 ÷ 2 = 333,258,257.5
If the quotient is a whole number, then 2 and 333,258,257.5 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 | 666,516,515 | |
| -1 | -666,516,515 |
Now, we try dividing 666,516,515 by 3:
666,516,515 ÷ 3 = 222,172,171.6667
If the quotient is a whole number, then 3 and 222,172,171.6667 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 | 666,516,515 | |
| -1 | -666,516,515 |
Let's try dividing by 4:
666,516,515 ÷ 4 = 166,629,128.75
If the quotient is a whole number, then 4 and 166,629,128.75 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 | 666,516,515 | |
| -1 | 666,516,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 827 | 4,135 | 5,789 | 23,027 | 28,945 | 115,135 | 161,189 | 805,945 | 19,043,329 | 95,216,645 | 133,303,303 | 666,516,515 |
| -1 | -5 | -7 | -35 | -827 | -4,135 | -5,789 | -23,027 | -28,945 | -115,135 | -161,189 | -805,945 | -19,043,329 | -95,216,645 | -133,303,303 | -666,516,515 |
Here are some more numbers to try:
Try the factor calculator