A:
Positive:
1 x 201870355 x 403740711 x 183518555 x 36703761 x 330935121 x 166835305 x 66187547 x 36905605 x 33367671 x 300852735 x 73813355 x 6017
Negative:
-1 x -20187035-5 x -4037407-11 x -1835185-55 x -367037-61 x -330935-121 x -166835-305 x -66187-547 x -36905-605 x -33367-671 x -30085-2735 x -7381-3355 x -6017
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 20,187,035, 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 | 20,187,035 | |
| -1 | -20,187,035 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,187,035.
Example:
1 x 20,187,035 = 20,187,035
and
-1 x -20,187,035 = 20,187,035
Notice both answers equal 20,187,035
With that explanation out of the way, let's continue. Next, we take the number 20,187,035 and divide it by 2:
20,187,035 ÷ 2 = 10,093,517.5
If the quotient is a whole number, then 2 and 10,093,517.5 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 | 20,187,035 | |
| -1 | -20,187,035 |
Now, we try dividing 20,187,035 by 3:
20,187,035 ÷ 3 = 6,729,011.6667
If the quotient is a whole number, then 3 and 6,729,011.6667 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 | 20,187,035 | |
| -1 | -20,187,035 |
Let's try dividing by 4:
20,187,035 ÷ 4 = 5,046,758.75
If the quotient is a whole number, then 4 and 5,046,758.75 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 | 20,187,035 | |
| -1 | 20,187,035 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 61 | 121 | 305 | 547 | 605 | 671 | 2,735 | 3,355 | 6,017 | 7,381 | 30,085 | 33,367 | 36,905 | 66,187 | 166,835 | 330,935 | 367,037 | 1,835,185 | 4,037,407 | 20,187,035 |
| -1 | -5 | -11 | -55 | -61 | -121 | -305 | -547 | -605 | -671 | -2,735 | -3,355 | -6,017 | -7,381 | -30,085 | -33,367 | -36,905 | -66,187 | -166,835 | -330,935 | -367,037 | -1,835,185 | -4,037,407 | -20,187,035 |
Here are some more numbers to try:
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