[献花][花圈]

N

## 输出

? its factors are ? ? ?

## 样例输入

1000

## 样例输出

6 its factors are 1 2 3
28 its factors are 1 2 4 7 14
496 its factors are 1 2 4 8 16 31 62 124 248 

[献花][花圈]