import itertools
import math

vs = [1, 2, 4, 8, 16, 3, 6, 12, 24, 5, 10, 15, 20]

for a in [1, 2, 4, 8, 16]:
    for b in [1, 3, 9, 27]:
        for c in [1, 5, 25]:
            vs.append(a * b * c)

vs = sorted(set(vs))
# print(vs)

for sz in range(10, len(vs) + 1):
    # print(sz)
    for c in itertools.combinations(vs, sz):
        l = list(c)

        tgt = sum(l) - math.lcm(*l)
        # print(l, tgt)
        if tgt in l:
            print(len(l))
            print(*l)
            exit(0)