As we know, in Roba's seraglio,there are many girls,according to this image.
So,you will be curious.So many girls,Roba may don't have enough time.
You start to doubt the authentic of this problem,assume Roba can meet 100 girls per day,and Roba can live 100years or so,then his dream will come true,but you don't know how many girs Roba will meet,so you have to guess.
So,the bigger positive factor the number has,the more likely the number become the girls in Roba's seraglio!.
But this is not the case,define Roba number,the least probably a number become the girls in Roba's seraglio,ie,the numbers have the least positive factors between 30000000 and 40000000,You are to output all the numbers
all the Roba numbers between 3*10^7 and 4*10^7