N = int(input())

ans = []
num = 0
for x in range(N + 1):
    for y in range(x,N + 1):
        t = x * y
        if t > N:break
        if x + y == 0:
            if t == N:
                num += 1
                ans.append((x,y,0))
                if x != y:
                    ans.append((y,x,0))
                    num += 1
                
        else:
            if (N - t) % (x +  y) == 0:
                num += 1
                z = (N - t) // (x + y)
                ans.append((x,y,z))
                if x != y:
                    ans.append((y,x,z))
                    num += 1
print(num)
for x,y,z in ans:
    print(x,y,z)