A:
Positive:
1 x 77288055 x 15457617 x 110411523 x 33603535 x 220823115 x 67207161 x 48005805 x 9601
Negative:
-1 x -7728805-5 x -1545761-7 x -1104115-23 x -336035-35 x -220823-115 x -67207-161 x -48005-805 x -9601
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 7,728,805, 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 | 7,728,805 | |
| -1 | -7,728,805 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,728,805.
Example:
1 x 7,728,805 = 7,728,805
and
-1 x -7,728,805 = 7,728,805
Notice both answers equal 7,728,805
With that explanation out of the way, let's continue. Next, we take the number 7,728,805 and divide it by 2:
7,728,805 ÷ 2 = 3,864,402.5
If the quotient is a whole number, then 2 and 3,864,402.5 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 | 7,728,805 | |
| -1 | -7,728,805 |
Now, we try dividing 7,728,805 by 3:
7,728,805 ÷ 3 = 2,576,268.3333
If the quotient is a whole number, then 3 and 2,576,268.3333 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 | 7,728,805 | |
| -1 | -7,728,805 |
Let's try dividing by 4:
7,728,805 ÷ 4 = 1,932,201.25
If the quotient is a whole number, then 4 and 1,932,201.25 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 | 7,728,805 | |
| -1 | 7,728,805 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 23 | 35 | 115 | 161 | 805 | 9,601 | 48,005 | 67,207 | 220,823 | 336,035 | 1,104,115 | 1,545,761 | 7,728,805 |
| -1 | -5 | -7 | -23 | -35 | -115 | -161 | -805 | -9,601 | -48,005 | -67,207 | -220,823 | -336,035 | -1,104,115 | -1,545,761 | -7,728,805 |
Here are some more numbers to try:
Try the factor calculator