import sys
from email.encoders import encode_noop
from zoneinfo import reset_tzpath

# sys.setrecursionlimit(200005)
# sys.set_int_max_str_digits(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-(-1 << 31)
inf = -1-(-1 << 62)

# md = 10**9+7
md = 998244353

n = II()

ans = 0
l = 1
while l <= n:
    c = n//l
    r = min(n, n//c)+1
    if c%md == 1:
        ans += r-l
    else:
        ans += (pow(c, r-l, md)-1)*pow(c-1, md-2, md)%md*pow(c, l, md)%md
    ans %= md
    # print(l,r,c,ans)
    l = r
print(ans)