A:
Positive:
1 x 6640612455 x 132812249109 x 6092305545 x 1218461631 x 10523951931 x 3438953155 x 2104799655 x 68779
Negative:
-1 x -664061245-5 x -132812249-109 x -6092305-545 x -1218461-631 x -1052395-1931 x -343895-3155 x -210479-9655 x -68779
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 664,061,245, 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 | 664,061,245 | |
| -1 | -664,061,245 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 664,061,245.
Example:
1 x 664,061,245 = 664,061,245
and
-1 x -664,061,245 = 664,061,245
Notice both answers equal 664,061,245
With that explanation out of the way, let's continue. Next, we take the number 664,061,245 and divide it by 2:
664,061,245 ÷ 2 = 332,030,622.5
If the quotient is a whole number, then 2 and 332,030,622.5 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 | 664,061,245 | |
| -1 | -664,061,245 |
Now, we try dividing 664,061,245 by 3:
664,061,245 ÷ 3 = 221,353,748.3333
If the quotient is a whole number, then 3 and 221,353,748.3333 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 | 664,061,245 | |
| -1 | -664,061,245 |
Let's try dividing by 4:
664,061,245 ÷ 4 = 166,015,311.25
If the quotient is a whole number, then 4 and 166,015,311.25 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 | 664,061,245 | |
| -1 | 664,061,245 |
If you did it right, you will end up with this table:
| 1 | 5 | 109 | 545 | 631 | 1,931 | 3,155 | 9,655 | 68,779 | 210,479 | 343,895 | 1,052,395 | 1,218,461 | 6,092,305 | 132,812,249 | 664,061,245 |
| -1 | -5 | -109 | -545 | -631 | -1,931 | -3,155 | -9,655 | -68,779 | -210,479 | -343,895 | -1,052,395 | -1,218,461 | -6,092,305 | -132,812,249 | -664,061,245 |
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