N, K = map(int, input().split())
A = [0 for i in range(N + 1)]
for i in range(2,N+1):
    if A[i]>0:
        continue
    j = 1
    while i*j<=N:
        A[i*j] += 1
        j += 1
cnt = 0
for i in range(N+1):
    if A[i] >= K:
        cnt += 1
print(cnt)