A:
Positive:
1 x 828080055 x 165616017 x 1182971535 x 2365943211 x 3924551055 x 784911477 x 560657385 x 11213
Negative:
-1 x -82808005-5 x -16561601-7 x -11829715-35 x -2365943-211 x -392455-1055 x -78491-1477 x -56065-7385 x -11213
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 82,808,005, 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 | 82,808,005 | |
| -1 | -82,808,005 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 82,808,005.
Example:
1 x 82,808,005 = 82,808,005
and
-1 x -82,808,005 = 82,808,005
Notice both answers equal 82,808,005
With that explanation out of the way, let's continue. Next, we take the number 82,808,005 and divide it by 2:
82,808,005 ÷ 2 = 41,404,002.5
If the quotient is a whole number, then 2 and 41,404,002.5 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 | 82,808,005 | |
| -1 | -82,808,005 |
Now, we try dividing 82,808,005 by 3:
82,808,005 ÷ 3 = 27,602,668.3333
If the quotient is a whole number, then 3 and 27,602,668.3333 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 | 82,808,005 | |
| -1 | -82,808,005 |
Let's try dividing by 4:
82,808,005 ÷ 4 = 20,702,001.25
If the quotient is a whole number, then 4 and 20,702,001.25 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 | 82,808,005 | |
| -1 | 82,808,005 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 211 | 1,055 | 1,477 | 7,385 | 11,213 | 56,065 | 78,491 | 392,455 | 2,365,943 | 11,829,715 | 16,561,601 | 82,808,005 |
| -1 | -5 | -7 | -35 | -211 | -1,055 | -1,477 | -7,385 | -11,213 | -56,065 | -78,491 | -392,455 | -2,365,943 | -11,829,715 | -16,561,601 | -82,808,005 |
Here are some more numbers to try:
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