A:
Positive:
1 x 77685855 x 155371711 x 70623555 x 141247137 x 56705685 x 113411031 x 75351507 x 5155
Negative:
-1 x -7768585-5 x -1553717-11 x -706235-55 x -141247-137 x -56705-685 x -11341-1031 x -7535-1507 x -5155
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 7,768,585, 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 | 7,768,585 | |
| -1 | -7,768,585 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,768,585.
Example:
1 x 7,768,585 = 7,768,585
and
-1 x -7,768,585 = 7,768,585
Notice both answers equal 7,768,585
With that explanation out of the way, let's continue. Next, we take the number 7,768,585 and divide it by 2:
7,768,585 ÷ 2 = 3,884,292.5
If the quotient is a whole number, then 2 and 3,884,292.5 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 | 7,768,585 | |
| -1 | -7,768,585 |
Now, we try dividing 7,768,585 by 3:
7,768,585 ÷ 3 = 2,589,528.3333
If the quotient is a whole number, then 3 and 2,589,528.3333 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 | 7,768,585 | |
| -1 | -7,768,585 |
Let's try dividing by 4:
7,768,585 ÷ 4 = 1,942,146.25
If the quotient is a whole number, then 4 and 1,942,146.25 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 | 7,768,585 | |
| -1 | 7,768,585 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 137 | 685 | 1,031 | 1,507 | 5,155 | 7,535 | 11,341 | 56,705 | 141,247 | 706,235 | 1,553,717 | 7,768,585 |
| -1 | -5 | -11 | -55 | -137 | -685 | -1,031 | -1,507 | -5,155 | -7,535 | -11,341 | -56,705 | -141,247 | -706,235 | -1,553,717 | -7,768,585 |
Here are some more numbers to try:
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