A:
Positive:
1 x 2011094917 x 118299719 x 105847129 x 693481113 x 177973323 x 62263361 x 55709493 x 40793551 x 364991921 x 104692147 x 93673277 x 6137
Negative:
-1 x -20110949-17 x -1182997-19 x -1058471-29 x -693481-113 x -177973-323 x -62263-361 x -55709-493 x -40793-551 x -36499-1921 x -10469-2147 x -9367-3277 x -6137
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 20,110,949, 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 | 20,110,949 | |
| -1 | -20,110,949 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,110,949.
Example:
1 x 20,110,949 = 20,110,949
and
-1 x -20,110,949 = 20,110,949
Notice both answers equal 20,110,949
With that explanation out of the way, let's continue. Next, we take the number 20,110,949 and divide it by 2:
20,110,949 ÷ 2 = 10,055,474.5
If the quotient is a whole number, then 2 and 10,055,474.5 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 | 20,110,949 | |
| -1 | -20,110,949 |
Now, we try dividing 20,110,949 by 3:
20,110,949 ÷ 3 = 6,703,649.6667
If the quotient is a whole number, then 3 and 6,703,649.6667 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 | 20,110,949 | |
| -1 | -20,110,949 |
Let's try dividing by 4:
20,110,949 ÷ 4 = 5,027,737.25
If the quotient is a whole number, then 4 and 5,027,737.25 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 | 20,110,949 | |
| -1 | 20,110,949 |
If you did it right, you will end up with this table:
| 1 | 17 | 19 | 29 | 113 | 323 | 361 | 493 | 551 | 1,921 | 2,147 | 3,277 | 6,137 | 9,367 | 10,469 | 36,499 | 40,793 | 55,709 | 62,263 | 177,973 | 693,481 | 1,058,471 | 1,182,997 | 20,110,949 |
| -1 | -17 | -19 | -29 | -113 | -323 | -361 | -493 | -551 | -1,921 | -2,147 | -3,277 | -6,137 | -9,367 | -10,469 | -36,499 | -40,793 | -55,709 | -62,263 | -177,973 | -693,481 | -1,058,471 | -1,182,997 | -20,110,949 |
Here are some more numbers to try:
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