A:
Positive:
1 x 200034855 x 400069719 x 105281595 x 210563193 x 103645965 x 207291091 x 183353667 x 5455
Negative:
-1 x -20003485-5 x -4000697-19 x -1052815-95 x -210563-193 x -103645-965 x -20729-1091 x -18335-3667 x -5455
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 20,003,485, 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 | 20,003,485 | |
| -1 | -20,003,485 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,003,485.
Example:
1 x 20,003,485 = 20,003,485
and
-1 x -20,003,485 = 20,003,485
Notice both answers equal 20,003,485
With that explanation out of the way, let's continue. Next, we take the number 20,003,485 and divide it by 2:
20,003,485 ÷ 2 = 10,001,742.5
If the quotient is a whole number, then 2 and 10,001,742.5 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 | 20,003,485 | |
| -1 | -20,003,485 |
Now, we try dividing 20,003,485 by 3:
20,003,485 ÷ 3 = 6,667,828.3333
If the quotient is a whole number, then 3 and 6,667,828.3333 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 | 20,003,485 | |
| -1 | -20,003,485 |
Let's try dividing by 4:
20,003,485 ÷ 4 = 5,000,871.25
If the quotient is a whole number, then 4 and 5,000,871.25 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 | 20,003,485 | |
| -1 | 20,003,485 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 193 | 965 | 1,091 | 3,667 | 5,455 | 18,335 | 20,729 | 103,645 | 210,563 | 1,052,815 | 4,000,697 | 20,003,485 |
| -1 | -5 | -19 | -95 | -193 | -965 | -1,091 | -3,667 | -5,455 | -18,335 | -20,729 | -103,645 | -210,563 | -1,052,815 | -4,000,697 | -20,003,485 |
Here are some more numbers to try:
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