import
    std.stdio,
    std.string,
    std.conv,
    std.range,
    std.container,
    std.algorithm;

void main(){
    ulong n = readln.strip.to!ulong;
    auto ret = 0;
    
    foreach(i; iota(1, n+1)) if(n%i == 0) ret += 1;
    writeln(ret);

}