A:
Positive:
1 x 7647578055 x 1529515617 x 10925111535 x 21850223127 x 6021715635 x 1204343889 x 8602454445 x 172049
Negative:
-1 x -764757805-5 x -152951561-7 x -109251115-35 x -21850223-127 x -6021715-635 x -1204343-889 x -860245-4445 x -172049
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 764,757,805, 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 | 764,757,805 | |
| -1 | -764,757,805 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 764,757,805.
Example:
1 x 764,757,805 = 764,757,805
and
-1 x -764,757,805 = 764,757,805
Notice both answers equal 764,757,805
With that explanation out of the way, let's continue. Next, we take the number 764,757,805 and divide it by 2:
764,757,805 ÷ 2 = 382,378,902.5
If the quotient is a whole number, then 2 and 382,378,902.5 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 | 764,757,805 | |
| -1 | -764,757,805 |
Now, we try dividing 764,757,805 by 3:
764,757,805 ÷ 3 = 254,919,268.3333
If the quotient is a whole number, then 3 and 254,919,268.3333 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 | 764,757,805 | |
| -1 | -764,757,805 |
Let's try dividing by 4:
764,757,805 ÷ 4 = 191,189,451.25
If the quotient is a whole number, then 4 and 191,189,451.25 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 | 764,757,805 | |
| -1 | 764,757,805 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 127 | 635 | 889 | 4,445 | 172,049 | 860,245 | 1,204,343 | 6,021,715 | 21,850,223 | 109,251,115 | 152,951,561 | 764,757,805 |
| -1 | -5 | -7 | -35 | -127 | -635 | -889 | -4,445 | -172,049 | -860,245 | -1,204,343 | -6,021,715 | -21,850,223 | -109,251,115 | -152,951,561 | -764,757,805 |
Here are some more numbers to try:
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