const readline = require('readline');
const rl = readline.createInterface({
input:process.stdin,
output:process.stdout
});
const getCompleteNum = (max) =>{
let arr=[];
for(let i=1;i<=max;i++){
let h=0;
for(let d=1;d<i;d++){
if(i%d===0){
h+=d;
}
}
if(h===i){
arr.push(i);
}
}
return arr.length;
}
rl.on('line',(line)=>{
console.log(getCompleteNum(line))
})

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