SOURCE

let input = '1'
let num = parseInt(input);
if(num == 1){
    console.log(num);
}
let result = [];
let i = 2;
while(i <= num && i*i <= num){    
    if(num % i === 0){
        result.push(i);
        num /= i;
        i = 2;
    }else{
        i++;
    }   
    
}
if(num != 1){
    result.push(num)
}
console.log(result.toString().replace(/,/g, ' '))