A:
Positive:
1 x 6665575217 x 9522250353 x 12576557269 x 2477909371 x 17966511883 x 3539876679 x 9979914257 x 46753
Negative:
-1 x -666557521-7 x -95222503-53 x -12576557-269 x -2477909-371 x -1796651-1883 x -353987-6679 x -99799-14257 x -46753
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 666,557,521, 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 | 666,557,521 | |
| -1 | -666,557,521 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 666,557,521.
Example:
1 x 666,557,521 = 666,557,521
and
-1 x -666,557,521 = 666,557,521
Notice both answers equal 666,557,521
With that explanation out of the way, let's continue. Next, we take the number 666,557,521 and divide it by 2:
666,557,521 ÷ 2 = 333,278,760.5
If the quotient is a whole number, then 2 and 333,278,760.5 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 | 666,557,521 | |
| -1 | -666,557,521 |
Now, we try dividing 666,557,521 by 3:
666,557,521 ÷ 3 = 222,185,840.3333
If the quotient is a whole number, then 3 and 222,185,840.3333 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 | 666,557,521 | |
| -1 | -666,557,521 |
Let's try dividing by 4:
666,557,521 ÷ 4 = 166,639,380.25
If the quotient is a whole number, then 4 and 166,639,380.25 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 | 666,557,521 | |
| -1 | 666,557,521 |
If you did it right, you will end up with this table:
| 1 | 7 | 53 | 269 | 371 | 1,883 | 6,679 | 14,257 | 46,753 | 99,799 | 353,987 | 1,796,651 | 2,477,909 | 12,576,557 | 95,222,503 | 666,557,521 |
| -1 | -7 | -53 | -269 | -371 | -1,883 | -6,679 | -14,257 | -46,753 | -99,799 | -353,987 | -1,796,651 | -2,477,909 | -12,576,557 | -95,222,503 | -666,557,521 |
Here are some more numbers to try:
Try the factor calculator