Write the desired Python code, taking into account the following.

Create a class that does not have any properties in the constructor method named "Calculate".

Create a method called "Factorial" that allows calculating the factorial of an integer.

Create a method called "Summ" that calculates the sum of $1+2+3+...+$n for any integer n$.$

Create a method called "MultiList" that adds all the divisors of a given integer to the list named "LDiv" and prints this list to the screen.

Create a method called "testPrims" that tests whether an integer is a prime number or not.

Create a method called "Nort" that calculates the average of n numbers entered from the keyboard.