A:
Positive:
1 x 200061955 x 400123911 x 181874517 x 117683555 x 36374985 x 235367187 x 106985935 x 21397
Negative:
-1 x -20006195-5 x -4001239-11 x -1818745-17 x -1176835-55 x -363749-85 x -235367-187 x -106985-935 x -21397
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 20,006,195, 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 | 20,006,195 | |
| -1 | -20,006,195 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,006,195.
Example:
1 x 20,006,195 = 20,006,195
and
-1 x -20,006,195 = 20,006,195
Notice both answers equal 20,006,195
With that explanation out of the way, let's continue. Next, we take the number 20,006,195 and divide it by 2:
20,006,195 ÷ 2 = 10,003,097.5
If the quotient is a whole number, then 2 and 10,003,097.5 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 | 20,006,195 | |
| -1 | -20,006,195 |
Now, we try dividing 20,006,195 by 3:
20,006,195 ÷ 3 = 6,668,731.6667
If the quotient is a whole number, then 3 and 6,668,731.6667 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 | 20,006,195 | |
| -1 | -20,006,195 |
Let's try dividing by 4:
20,006,195 ÷ 4 = 5,001,548.75
If the quotient is a whole number, then 4 and 5,001,548.75 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 | 20,006,195 | |
| -1 | 20,006,195 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 17 | 55 | 85 | 187 | 935 | 21,397 | 106,985 | 235,367 | 363,749 | 1,176,835 | 1,818,745 | 4,001,239 | 20,006,195 |
| -1 | -5 | -11 | -17 | -55 | -85 | -187 | -935 | -21,397 | -106,985 | -235,367 | -363,749 | -1,176,835 | -1,818,745 | -4,001,239 | -20,006,195 |
Here are some more numbers to try:
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