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

ds = set()
d = 1
while d*d <= sa:
    if sa%d==0:
        ds.add(d)
        ds.add(sa//d)
    d += 1

ans = 1
for d in ds:
    if d > N: continue
    v = sa//d
    c = 0
    nxt = v
    for a in A:
        if c+a > nxt: break
        if c+a == nxt:
            c += a
            nxt += v
        else:
            c += a
    else:
        ans = max(ans, d)
print(ans)