A:
Positive:
1 x 77075008129 x 26577589137 x 5625913419 x 1839499463 x 16646873973 x 19399712151 x 6343113427 x 57403
Negative:
-1 x -770750081-29 x -26577589-137 x -5625913-419 x -1839499-463 x -1664687-3973 x -193997-12151 x -63431-13427 x -57403
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 770,750,081, 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 | 770,750,081 | |
| -1 | -770,750,081 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 770,750,081.
Example:
1 x 770,750,081 = 770,750,081
and
-1 x -770,750,081 = 770,750,081
Notice both answers equal 770,750,081
With that explanation out of the way, let's continue. Next, we take the number 770,750,081 and divide it by 2:
770,750,081 ÷ 2 = 385,375,040.5
If the quotient is a whole number, then 2 and 385,375,040.5 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 | 770,750,081 | |
| -1 | -770,750,081 |
Now, we try dividing 770,750,081 by 3:
770,750,081 ÷ 3 = 256,916,693.6667
If the quotient is a whole number, then 3 and 256,916,693.6667 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 | 770,750,081 | |
| -1 | -770,750,081 |
Let's try dividing by 4:
770,750,081 ÷ 4 = 192,687,520.25
If the quotient is a whole number, then 4 and 192,687,520.25 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 | 770,750,081 | |
| -1 | 770,750,081 |
If you did it right, you will end up with this table:
| 1 | 29 | 137 | 419 | 463 | 3,973 | 12,151 | 13,427 | 57,403 | 63,431 | 193,997 | 1,664,687 | 1,839,499 | 5,625,913 | 26,577,589 | 770,750,081 |
| -1 | -29 | -137 | -419 | -463 | -3,973 | -12,151 | -13,427 | -57,403 | -63,431 | -193,997 | -1,664,687 | -1,839,499 | -5,625,913 | -26,577,589 | -770,750,081 |
Here are some more numbers to try:
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