#include<stdio.h>

#include<conio.h>

int tongchuso(long n)

{

int s=0, du;

while(n>0)

{

du=n%10;//du la so hang don vi

s=s+du;//cong so hang don vi vao s

n=n/10;//cat bo chu so hang con vi

}

return s;

}

void thuaso_nt(long n)

{

int i;

while(n>1)

{

for(i=2;i<=n;i++)//SO DAU TIEN N CHIA HET CHAC CHAN LA SO NGUYEN TO

{

if(n%i==0)

{

printf("%4d",i);

n=n/i;

break;//THOAT RA DE THUC HIEN KIEM TRA LAI TU 2

}

}

}

}

void main()

{

long n;

printf("

nhap n=");scanf("%ld",&n);

printf("

tong cac chu so cua n la %d

",tongchuso(n));

printf("

phan tich ra thua so nguyen to

");

thuaso_nt(n);

getch();

}