N = int(input())

cnt = 0
ans = []
for x in range(int(pow(N, 0.5)) + 1):
  for y in range(x + 1):
    if x == y == 0:
      continue
    if (N - x * y) % (x + y) == 0 and (N - x * y) / (x + y) >= 0:
      ans.append([x, y, (N - x * y) // (x + y)])
      ans.append([y, x, (N - x * y) // (x + y)])
      ans.append([x, (N - x * y) // (x + y), y])
      ans.append([y, (N - x * y) // (x + y), x])
      ans.append([(N - x * y) // (x + y), x, y])
      ans.append([(N - x * y) // (x + y), y, x])
ans = list(map(list, set(map(tuple, ans))))
print(len(ans))
for i in range(len(ans)):
  print(*ans[i])