const getGets = (arr) => {
    let index = 0;

    return () => {
        const toReturn = arr[index];
        index += 1;
        return toReturn;
    };
};
// this is the test
const test = [
    '13',

];

const gets = this.gets || getGets(test);
const print = this.print || console.log;

 let input = gets()
 let number =0
 for (let i = 0 ; i < input ; i++) {
 if (input%i === 0 || input%(i+2) === 0) {
 number += i
 print(number)
 }
 }