n = int(input())
a = list(map(int,input().split()))
mod = 998244353
def e(n): #O(NloglogN)
  l = [i for i in range(n+1)]
  l[0] = 0
  l[1] = 1
  for i in range(2,n):
    if l[i] == i:
      for p in range(i+i,n+1,i):
        l[p] = i
  return l
l = e(10**6+10)

now = [0]*(10**6+10)
for ai in a[::-1]:
  s = set()
  aai = ai
  while aai != 1:
    s.add(l[aai])
    aai //= l[aai]
  
  tmp = 0
  cnt = 0
  for i in s:
    tmp += now[i]
    tmp %= mod
    cnt += 1
  now[ai] -= (cnt-1)*(tmp+1)
  now[ai] %= mod
  for i in s:
    now[i] += tmp+1
    now[i] %= mod

print(sum(now)%mod)