A:
Positive:
1 x 66688542713 x 5129887919 x 35099233247 x 26999411567 x 4255811723 x 38704920371 x 3273722399 x 29773
Negative:
-1 x -666885427-13 x -51298879-19 x -35099233-247 x -2699941-1567 x -425581-1723 x -387049-20371 x -32737-22399 x -29773
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 666,885,427, 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 | 666,885,427 | |
| -1 | -666,885,427 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 666,885,427.
Example:
1 x 666,885,427 = 666,885,427
and
-1 x -666,885,427 = 666,885,427
Notice both answers equal 666,885,427
With that explanation out of the way, let's continue. Next, we take the number 666,885,427 and divide it by 2:
666,885,427 ÷ 2 = 333,442,713.5
If the quotient is a whole number, then 2 and 333,442,713.5 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 | 666,885,427 | |
| -1 | -666,885,427 |
Now, we try dividing 666,885,427 by 3:
666,885,427 ÷ 3 = 222,295,142.3333
If the quotient is a whole number, then 3 and 222,295,142.3333 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 | 666,885,427 | |
| -1 | -666,885,427 |
Let's try dividing by 4:
666,885,427 ÷ 4 = 166,721,356.75
If the quotient is a whole number, then 4 and 166,721,356.75 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 | 666,885,427 | |
| -1 | 666,885,427 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 247 | 1,567 | 1,723 | 20,371 | 22,399 | 29,773 | 32,737 | 387,049 | 425,581 | 2,699,941 | 35,099,233 | 51,298,879 | 666,885,427 |
| -1 | -13 | -19 | -247 | -1,567 | -1,723 | -20,371 | -22,399 | -29,773 | -32,737 | -387,049 | -425,581 | -2,699,941 | -35,099,233 | -51,298,879 | -666,885,427 |
Here are some more numbers to try:
Try the factor calculator