import sys

# sys.setrecursionlimit(200005)
# sys.set_int_max_str_digits(1000005)
int1 = lambda x: int(x)-1
pDB = lambda *x: print(*x, end="\n", file=sys.stderr)
p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr)
def II(): return int(sys.stdin.readline())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LI1(): return list(map(int1, sys.stdin.readline().split()))
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def SI(): return sys.stdin.readline().rstrip()

dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
inf = (1 << 63)-1
md = 10**9+7
# md = 998244353

# xy+yz+zx=n
# z=(n-xy)/(y+x)

n=II()

ans=set()
for x in range(n+1):
    for y in range(x,n+1):
        if n-x*y<0:break
        if x+y==0:continue
        if (n-x*y)%(x+y):continue
        z=(n-x*y)//(x+y)
        ans.add((x,y,z))
        ans.add((y,x,z))
        ans.add((z,y,x))
        ans.add((x,z,y))
        ans.add((y,z,x))
        ans.add((z,x,y))

print(len(ans))
for x,y,z in ans:print(x,y,z)