import sys
input = sys.stdin.readline
mod = 998244353

NN = 10 ** 7 + 1
ans = [0] * (NN + 1)
min_factor = list(range(NN + 1))
for i in range(2, NN + 1):
    if min_factor[i] == i:
        for x in range(2, NN + 1):
            if x * i > NN:
                break
            min_factor[x * i] = min(min_factor[x * i], i)
for i in range(2, NN + 1):
    ii = i
    prev_p = 1
    phi = i
    while ii != 1:
        p = min_factor[ii]
        if p != prev_p:
            prev_p = p
            phi *= p - 1
            phi //= p
        ii //= p
    ans[i] = ans[i - 1] + 2 * (i - 1) - phi

for _ in range(int(input())):
    N = int(input())
    print(ans[N])