import sys
input = sys.stdin.readline

mod=998244353

N=int(input())

LIST=[0]*(N+1)

for i in range(1,N+1):
    for j in range(i,N+1,i):
        LIST[j]+=1

for i in range(1,N+1):
    LIST[i]=(LIST[i]+LIST[i-1])%mod

print(sum(LIST)%mod)