Contest1470/1470I.py

a = []
for n in range(2, 1001):
    s = 1
    for i in range(2, n // 2 + 1):
        if n % i == 0:
            s += i
    if s == n:
        a.append(n)
for n in a:
    print(n, "its factors are 1", end="")
    for i in range(2, n // 2 + 1):
        if n % i == 0:
            print("," + str(i), end="")
    print("")