import sys

# sys.setrecursionlimit(200005)
int1 = lambda x: int(x)-1
p2D = lambda x: print(*x, sep="\n")
def II(): return int(sys.stdin.readline())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LI1(): return list(map(int1, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
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 = 10**9
# md = 998244353
md = 10**9+7

def factors(a):
    if a <= 0: return [0]
    dd0, dd1 = [], []
    for d in range(1, a+1):
        if d*d > a: break
        if a%d: continue
        dd0.append(d)
        dd1.append(a//d)
    if dd0[-1] == dd1[-1]: dd1.pop()
    return dd0+dd1[::-1]

def cal(a, b):
    c = aa[-1]-1
    if a == b == c:
        return pow(b[0], m, md)*((m+2)*(m+1)//2)%md
    if a == c: b, c = c, b
    if b == c: a, c = c, a
    if a == b:
        am = pow(a, m+1, md)
        return (-c*(m+2)*am%md+(m+1)*a*am%md+pow(c, m+2, md))*pow(a-c, 2*md-4, md)%md
    return (pow(a, m+2, md)*(b-c)+pow(c, m+1, md)*(a*c-b*c)+pow(b, m+1, md)*(-a*b+b*c))*pow((a-b)*(a-c)*(b-c), md-2,
                                                                                            md)%md
n, m = LI()
m -= 3
aa = [0, 0]+LI()

ff = factors(n)[1:-1]
ton = [False]*(n+1)
ans = 0
for i, f in enumerate(ff):
    ton[f] = True
    for g in ff[i+1:]:
        if g%f: continue
        ans += cal(aa[f]-1, aa[g]-1)
        # print(f,g,ans)
    ans%=md
print(ans)

ot = [[] for _ in range(n+1)]
for _ in range(II()):
    x, y = LI()
    if y == n:
        for f in factors(x)[1:-1]+ot[x]:
            ans = (ans+cal(aa[f]-1, aa[x]-1))%md
        ton[x] = True
    elif ton[y]:
        ans = (ans+cal(aa[x]-1, aa[y]-1))%md
    if y < n: ot[y].append(x)
    print(ans)