Formula based PHP program to find sum of all divisors of n

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This is a basic Formula-based PHP program to find the sum of all divisors of n. Below examples will help you in the better understanding of the basic concept of PHP programming language.

Formula based PHP program to find sum of all divisors of n

We are using the if…else statement to determine the number of days in a current month. Copy the below code and execute it with the help of PHP compiler.