#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;


#ifdef __linux__
#define gc getchar_unlocked
#define pc putchar_unlocked
#else
#define gc _getchar_nolock
#define pc _putchar_nolock
#endif
inline bool blank(const char x) {return !(x^32)||!(x^10)||!(x^13)||!(x^9);}
template<typename Tp> inline void read(Tp &x) {x=0; register bool z=true; register char a=gc(); for(;!isdigit(a);a=gc()) if(a=='-') z=false; for(;isdigit(a);a=gc()) x=(x<<1)+(x<<3)+(a^48); x=(z?x:~x+1);}
inline void read(double &x) {x=0.0; register bool z=true; register double y=0.1; register char a=gc(); for(;!isdigit(a);a=gc()) if(a=='-') z=false; for(;isdigit(a);a=gc()) x=x*10+(a^48); if(a!='.') return x=z?x:-x,void(); for(a=gc();isdigit(a);a=gc(),y/=10) x+=y*(a^48); x=(z?x:-x);}
inline void read(char &x) {for(x=gc();blank(x)&&(x^-1);x=gc());}
inline void read(char *x) {register char a=gc(); for(;blank(a)&&(a^-1);a=gc()); for(;!blank(a)&&(a^-1);a=gc()) *x++=a; *x=0;}
inline void read(string &x) {x=""; register char a=gc(); for(;blank(a)&&(a^-1);a=gc()); for(;!blank(a)&&(a^-1);a=gc()) x+=a;}
template<typename T,typename ...Tp> inline void read(T &x,Tp &...y) {read(x),read(y...);}
template<typename Tp> inline void write(Tp x) {if(!x) return pc(48),void(); if(x<0) pc('-'),x=~x+1; register int len=0; register char tmp[64]; for(;x;x/=10) tmp[++len]=x%10+48; while(len) pc(tmp[len--]);}
inline void write(const double x) {register int a=6; register double b=x,c=b; if(b<0) pc('-'),b=-b,c=-c; register double y=5*powl(10,-a-1); b+=y,c+=y; register int len=0; register char tmp[64]; if(b<1) pc(48); else for(;b>=1;b/=10) tmp[++len]=floor(b)-floor(b/10)*10+48; while(len) pc(tmp[len--]); pc('.'); for(c*=10;a;a--,c*=10) pc(floor(c)-floor(c/10)*10+48);}
inline void write(const pair<int,double>x) {register int a=x.first; if(a<7) {register double b=x.second,c=b; if(b<0) pc('-'),b=-b,c=-c; register double y=5*powl(10,-a-1); b+=y,c+=y; register int len=0; register char tmp[64]; if(b<1) pc(48); else for(;b>=1;b/=10) tmp[++len]=floor(b)-floor(b/10)*10+48; while(len) pc(tmp[len--]); a&&(pc('.')); for(c*=10;a;a--,c*=10) pc(floor(c)-floor(c/10)*10+48);} else cout<<fixed<<setprecision(a)<<x.second;}
inline void write(const char x) {pc(x);}
inline void write(const bool x) {pc(x?49:48);}
inline void write(char *x) {fputs(x,stdout);}
inline void write(const char *x) {fputs(x,stdout);}
inline void write(const string &x) {fputs(x.c_str(),stdout);}
template<typename T,typename ...Tp> inline void write(T x,Tp ...y) {write(x),write(y...);}


const int N = 2e5 + 1;
int n;
ll a[N];

ll cnt[N << 1];
ll ans;

int main(){
    ///ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);

///    freopen("mod.in", "r", stdin);
///    freopen("mod.out", "w", stdout);

    read(n);
    for(int i = 1; i <= n; i ++){
        read(a[i]);
        cnt[a[i]] ++;
        ans += a[i] * n;
    }

    for(int i = 1; i < (N << 1); i ++){
        cnt[i] += cnt[i - 1];
    }

    for(int mod = 1; mod < N; mod ++){
        for(int k = 0; k * mod < N; k ++){
            ans -= (cnt[(k + 1) * mod - 1] - (k * mod - 1 >= 0 ? cnt[k * mod - 1] : 0)) * (cnt[mod] - cnt[mod - 1]) * (mod * k);
        }
    }

    write(ans);

    return 0;
}

/***

3
1 5 3

8
8 8 8 8 8 8 8 8

***/