A:
Positive:
1 x 209750755 x 419501511 x 190682525 x 83900355 x 38136589 x 235675275 x 76273445 x 47135857 x 24475979 x 214252225 x 94274285 x 4895
Negative:
-1 x -20975075-5 x -4195015-11 x -1906825-25 x -839003-55 x -381365-89 x -235675-275 x -76273-445 x -47135-857 x -24475-979 x -21425-2225 x -9427-4285 x -4895
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 20,975,075, 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 | 20,975,075 | |
| -1 | -20,975,075 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,975,075.
Example:
1 x 20,975,075 = 20,975,075
and
-1 x -20,975,075 = 20,975,075
Notice both answers equal 20,975,075
With that explanation out of the way, let's continue. Next, we take the number 20,975,075 and divide it by 2:
20,975,075 ÷ 2 = 10,487,537.5
If the quotient is a whole number, then 2 and 10,487,537.5 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 | 20,975,075 | |
| -1 | -20,975,075 |
Now, we try dividing 20,975,075 by 3:
20,975,075 ÷ 3 = 6,991,691.6667
If the quotient is a whole number, then 3 and 6,991,691.6667 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 | 20,975,075 | |
| -1 | -20,975,075 |
Let's try dividing by 4:
20,975,075 ÷ 4 = 5,243,768.75
If the quotient is a whole number, then 4 and 5,243,768.75 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 | 20,975,075 | |
| -1 | 20,975,075 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 55 | 89 | 275 | 445 | 857 | 979 | 2,225 | 4,285 | 4,895 | 9,427 | 21,425 | 24,475 | 47,135 | 76,273 | 235,675 | 381,365 | 839,003 | 1,906,825 | 4,195,015 | 20,975,075 |
| -1 | -5 | -11 | -25 | -55 | -89 | -275 | -445 | -857 | -979 | -2,225 | -4,285 | -4,895 | -9,427 | -21,425 | -24,475 | -47,135 | -76,273 | -235,675 | -381,365 | -839,003 | -1,906,825 | -4,195,015 | -20,975,075 |
Here are some more numbers to try:
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