import sys


def odd_number_of_divisors(n, number_of_passes):
    """Counts the number of times the door is toggled, and returns True if left open after a number of passes."""
    return sum((n % i == 0 for i in range(1, number_of_passes + 1))) % 2 == 1


def pass_doors(number_of_doors, number_of_passes):
    if number_of_passes > number_of_doors:
        number_of_passes = number_of_doors
    return sum(
        (
            odd_number_of_divisors(i, number_of_passes)
            for i in range(1, number_of_doors + 1)
        )
    )


if __name__ == "__main__":
    print(pass_doors(int(sys.argv[1]), int(sys.argv[2])))