A:
Positive:
1 x 200190417 x 285986361 x 328181173 x 115717271 x 73871427 x 468831211 x 165311897 x 10553
Negative:
-1 x -20019041-7 x -2859863-61 x -328181-173 x -115717-271 x -73871-427 x -46883-1211 x -16531-1897 x -10553
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 20,019,041, 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 | 20,019,041 | |
| -1 | -20,019,041 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,019,041.
Example:
1 x 20,019,041 = 20,019,041
and
-1 x -20,019,041 = 20,019,041
Notice both answers equal 20,019,041
With that explanation out of the way, let's continue. Next, we take the number 20,019,041 and divide it by 2:
20,019,041 ÷ 2 = 10,009,520.5
If the quotient is a whole number, then 2 and 10,009,520.5 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 | 20,019,041 | |
| -1 | -20,019,041 |
Now, we try dividing 20,019,041 by 3:
20,019,041 ÷ 3 = 6,673,013.6667
If the quotient is a whole number, then 3 and 6,673,013.6667 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 | 20,019,041 | |
| -1 | -20,019,041 |
Let's try dividing by 4:
20,019,041 ÷ 4 = 5,004,760.25
If the quotient is a whole number, then 4 and 5,004,760.25 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 | 20,019,041 | |
| -1 | 20,019,041 |
If you did it right, you will end up with this table:
| 1 | 7 | 61 | 173 | 271 | 427 | 1,211 | 1,897 | 10,553 | 16,531 | 46,883 | 73,871 | 115,717 | 328,181 | 2,859,863 | 20,019,041 |
| -1 | -7 | -61 | -173 | -271 | -427 | -1,211 | -1,897 | -10,553 | -16,531 | -46,883 | -73,871 | -115,717 | -328,181 | -2,859,863 | -20,019,041 |
Here are some more numbers to try:
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