A:
Positive:
1 x 805000555 x 1610001119 x 423684589 x 90449595 x 847369445 x 1808991691 x 476058455 x 9521
Negative:
-1 x -80500055-5 x -16100011-19 x -4236845-89 x -904495-95 x -847369-445 x -180899-1691 x -47605-8455 x -9521
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 80,500,055, 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 | 80,500,055 | |
| -1 | -80,500,055 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 80,500,055.
Example:
1 x 80,500,055 = 80,500,055
and
-1 x -80,500,055 = 80,500,055
Notice both answers equal 80,500,055
With that explanation out of the way, let's continue. Next, we take the number 80,500,055 and divide it by 2:
80,500,055 ÷ 2 = 40,250,027.5
If the quotient is a whole number, then 2 and 40,250,027.5 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 | 80,500,055 | |
| -1 | -80,500,055 |
Now, we try dividing 80,500,055 by 3:
80,500,055 ÷ 3 = 26,833,351.6667
If the quotient is a whole number, then 3 and 26,833,351.6667 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 | 80,500,055 | |
| -1 | -80,500,055 |
Let's try dividing by 4:
80,500,055 ÷ 4 = 20,125,013.75
If the quotient is a whole number, then 4 and 20,125,013.75 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 | 80,500,055 | |
| -1 | 80,500,055 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 89 | 95 | 445 | 1,691 | 8,455 | 9,521 | 47,605 | 180,899 | 847,369 | 904,495 | 4,236,845 | 16,100,011 | 80,500,055 |
| -1 | -5 | -19 | -89 | -95 | -445 | -1,691 | -8,455 | -9,521 | -47,605 | -180,899 | -847,369 | -904,495 | -4,236,845 | -16,100,011 | -80,500,055 |
Here are some more numbers to try:
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