N=int(input())
ans=[]
def make_divisors(n):
    lower_divisors , upper_divisors = [], []
    i = 1
    while i*i <= n:
        if n % i == 0:
            lower_divisors.append(i)
            if i != n // i:
                upper_divisors.append(n//i)
        i += 1
    return lower_divisors + upper_divisors[::-1]
  
for x in range(N+1):
  if x>(N/3)**0.5:
    break
  A=make_divisors(N+x**2)
  for a in A:
    b=(N+x**2)//a
    y,z=a-x,b-x
    if x<=y and y<=z:
      ans.append((x,y,z))
      ans.append((x,z,y))
      ans.append((y,x,z))
      ans.append((y,z,x))
      ans.append((z,x,y))
      ans.append((z,y,x))
ans=set(ans)
print(len(ans))
for i in ans:
  print(*i)