A:
Positive:
1 x 81618355 x 163236711 x 74198531 x 26328555 x 148397155 x 52657341 x 239351705 x 4787
Negative:
-1 x -8161835-5 x -1632367-11 x -741985-31 x -263285-55 x -148397-155 x -52657-341 x -23935-1705 x -4787
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 8,161,835, 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 | 8,161,835 | |
| -1 | -8,161,835 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 8,161,835.
Example:
1 x 8,161,835 = 8,161,835
and
-1 x -8,161,835 = 8,161,835
Notice both answers equal 8,161,835
With that explanation out of the way, let's continue. Next, we take the number 8,161,835 and divide it by 2:
8,161,835 ÷ 2 = 4,080,917.5
If the quotient is a whole number, then 2 and 4,080,917.5 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 | 8,161,835 | |
| -1 | -8,161,835 |
Now, we try dividing 8,161,835 by 3:
8,161,835 ÷ 3 = 2,720,611.6667
If the quotient is a whole number, then 3 and 2,720,611.6667 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 | 8,161,835 | |
| -1 | -8,161,835 |
Let's try dividing by 4:
8,161,835 ÷ 4 = 2,040,458.75
If the quotient is a whole number, then 4 and 2,040,458.75 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 | 8,161,835 | |
| -1 | 8,161,835 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 31 | 55 | 155 | 341 | 1,705 | 4,787 | 23,935 | 52,657 | 148,397 | 263,285 | 741,985 | 1,632,367 | 8,161,835 |
| -1 | -5 | -11 | -31 | -55 | -155 | -341 | -1,705 | -4,787 | -23,935 | -52,657 | -148,397 | -263,285 | -741,985 | -1,632,367 | -8,161,835 |
Here are some more numbers to try:
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