func num_divisors[n: i64] : i64
    end := n->isqrt()

    out := 0
    for i in 1..end+1
        if n % i == 0
            out += 2

    if end * end == n
        out -= 1
    return out

func main[] : i64
    n := 0
    i := 1
    while true
        n += i
        if num_divisors(n) > 500
            io.println_i64(n)
            break
        i += 1