import sys

# sys.setrecursionlimit(200005)
int1 = lambda x: int(x)-1
pDB = lambda *x: print(*x, end="\n", file=sys.stderr)
p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr)
def II(): return int(sys.stdin.readline())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LI1(): return list(map(int1, sys.stdin.readline().split()))
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def SI(): return sys.stdin.readline().rstrip()
dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
# inf = (1 << 63)-1
inf = (1 << 31)-1
md = 10**9+7
# md = 998244353

n, m = LI()

n2 = n//2

if m > n2:
    print(0)
    exit()

dp = [0]*(n2+1)
for a in range(n2, m-1, -1):
    c = n//a
    dp[a] = c*(c-1)%md
    for b in range(a*2, n2+1, a):
        dp[a] -= dp[b]
        dp[a] %= md

f = 1
for i in range(2, n-1): f = f*i%md

ans = dp[m]*f%md
print(ans)