A:
Positive:
1 x 200031055 x 400062119 x 105279595 x 210559239 x 83695881 x 227051195 x 167394405 x 4541
Negative:
-1 x -20003105-5 x -4000621-19 x -1052795-95 x -210559-239 x -83695-881 x -22705-1195 x -16739-4405 x -4541
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 20,003,105, 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 | 20,003,105 | |
| -1 | -20,003,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,003,105.
Example:
1 x 20,003,105 = 20,003,105
and
-1 x -20,003,105 = 20,003,105
Notice both answers equal 20,003,105
With that explanation out of the way, let's continue. Next, we take the number 20,003,105 and divide it by 2:
20,003,105 ÷ 2 = 10,001,552.5
If the quotient is a whole number, then 2 and 10,001,552.5 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 | 20,003,105 | |
| -1 | -20,003,105 |
Now, we try dividing 20,003,105 by 3:
20,003,105 ÷ 3 = 6,667,701.6667
If the quotient is a whole number, then 3 and 6,667,701.6667 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 | 20,003,105 | |
| -1 | -20,003,105 |
Let's try dividing by 4:
20,003,105 ÷ 4 = 5,000,776.25
If the quotient is a whole number, then 4 and 5,000,776.25 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 | 20,003,105 | |
| -1 | 20,003,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 239 | 881 | 1,195 | 4,405 | 4,541 | 16,739 | 22,705 | 83,695 | 210,559 | 1,052,795 | 4,000,621 | 20,003,105 |
| -1 | -5 | -19 | -95 | -239 | -881 | -1,195 | -4,405 | -4,541 | -16,739 | -22,705 | -83,695 | -210,559 | -1,052,795 | -4,000,621 | -20,003,105 |
Here are some more numbers to try:
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