Byang is going to join a new school. His new class has
Each of the students are identified by their roll numbers starting from 1 to
$N$. Byang is going to get the next roll number in the sequence.
Byang plans to make friends with only those whose roll numbers are a divisor of his roll number.
Can you help Byang count how many friends he will make?
The input will contain an integer
$0 < N < 1000000$).
Print the number of friends Byang will make in his new class.