N = int(input())
A = list(map(int, input().split()))

def divs(n):
  i = 1
  while i * i <= n:
    if n % i == 0:
      yield i
      yield n // i
    i += 1

def check(x):
  i = 0
  while i < N:
    s = 0
    while i < N and s < x:
      s += A[i]
      i += 1
    if x != s: return False
  return True

S = sum(A)
print(max(d for d in divs(S) if check(S // d)))