Smallest Multiple

class Main {
    public static void main(String[] args) {
        int i = 20;
        while( isDivisible(i) == false) { 
            i += 20;
        }
        System.out.print(i);
    }
    public static boolean isDivisible(int n) {
        for(int i = 2; i <= 20; i++) {
            if(n % i != 0) return false;
        }
        return true;
    }
    
    
    
}