A:
Positive:
1 x 208841155 x 41768237 x 298344523 x 90800535 x 596689115 x 181601161 x 129715805 x 25943
Negative:
-1 x -20884115-5 x -4176823-7 x -2983445-23 x -908005-35 x -596689-115 x -181601-161 x -129715-805 x -25943
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 20,884,115, 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 | 20,884,115 | |
| -1 | -20,884,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,884,115.
Example:
1 x 20,884,115 = 20,884,115
and
-1 x -20,884,115 = 20,884,115
Notice both answers equal 20,884,115
With that explanation out of the way, let's continue. Next, we take the number 20,884,115 and divide it by 2:
20,884,115 ÷ 2 = 10,442,057.5
If the quotient is a whole number, then 2 and 10,442,057.5 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 | 20,884,115 | |
| -1 | -20,884,115 |
Now, we try dividing 20,884,115 by 3:
20,884,115 ÷ 3 = 6,961,371.6667
If the quotient is a whole number, then 3 and 6,961,371.6667 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 | 20,884,115 | |
| -1 | -20,884,115 |
Let's try dividing by 4:
20,884,115 ÷ 4 = 5,221,028.75
If the quotient is a whole number, then 4 and 5,221,028.75 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 | 20,884,115 | |
| -1 | 20,884,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 23 | 35 | 115 | 161 | 805 | 25,943 | 129,715 | 181,601 | 596,689 | 908,005 | 2,983,445 | 4,176,823 | 20,884,115 |
| -1 | -5 | -7 | -23 | -35 | -115 | -161 | -805 | -25,943 | -129,715 | -181,601 | -596,689 | -908,005 | -2,983,445 | -4,176,823 | -20,884,115 |
Here are some more numbers to try:
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