A:
Positive:
1 x 7641651555 x 15283303113 x 5878193565 x 11756387431 x 17730052155 x 3546015603 x 13638527277 x 28015
Negative:
-1 x -764165155-5 x -152833031-13 x -58781935-65 x -11756387-431 x -1773005-2155 x -354601-5603 x -136385-27277 x -28015
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 764,165,155, 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 | 764,165,155 | |
| -1 | -764,165,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 764,165,155.
Example:
1 x 764,165,155 = 764,165,155
and
-1 x -764,165,155 = 764,165,155
Notice both answers equal 764,165,155
With that explanation out of the way, let's continue. Next, we take the number 764,165,155 and divide it by 2:
764,165,155 ÷ 2 = 382,082,577.5
If the quotient is a whole number, then 2 and 382,082,577.5 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 | 764,165,155 | |
| -1 | -764,165,155 |
Now, we try dividing 764,165,155 by 3:
764,165,155 ÷ 3 = 254,721,718.3333
If the quotient is a whole number, then 3 and 254,721,718.3333 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 | 764,165,155 | |
| -1 | -764,165,155 |
Let's try dividing by 4:
764,165,155 ÷ 4 = 191,041,288.75
If the quotient is a whole number, then 4 and 191,041,288.75 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 | 764,165,155 | |
| -1 | 764,165,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 431 | 2,155 | 5,603 | 27,277 | 28,015 | 136,385 | 354,601 | 1,773,005 | 11,756,387 | 58,781,935 | 152,833,031 | 764,165,155 |
| -1 | -5 | -13 | -65 | -431 | -2,155 | -5,603 | -27,277 | -28,015 | -136,385 | -354,601 | -1,773,005 | -11,756,387 | -58,781,935 | -152,833,031 | -764,165,155 |
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