from itertools import permutations

N = int(input())

s = set()
for x in range(N+1):
    if 3*x*x > N: break
    for y in range(x, N+1):
        if x == y == 0: continue
        if x*x + y*y + y*x > N: break
        if (N - x*y) % (x + y) != 0: continue
        z = (N - x*y) // (x + y)
        if y <= z:
            s.add((x, y, z))

ans = set()
for e in s:
    ans.update(permutations(e))

print(len(ans))
for a in ans:
    print(*a)