n = int(input())
m = 4000
r = []
for x in range(0,m):
    for y in range(x,m):
        if x==y==0: continue
        p = n - x*y
        q = x+y
        if p%q: continue
        z = p//q
        if z < y: break
        r += list(set([(x,y,z),(y,z,x),(z,x,y),(z,y,x),(y,x,z),(x,z,y)]))
print(len(r))
for i in r:
    print(*i)