fn run() {
    input! {
        n: usize,
        a: [usize; n],
    }
    let m = *a.iter().max().unwrap();
    let mut sum = vec![(0, 0); 3 * m + 1];
    for a in a {
        sum[a] = (1, a);
    }
    for i in 1..sum.len() {
        sum[i].0 += sum[i - 1].0;
        sum[i].1 += sum[i - 1].1;
    }
    const MOD: usize = 1_000_000_007;
    let mut ans = 0;
    for i in 1..m {
        if sum[i].0 == sum[i - 1].0 {
            continue;
        }
        for j in 1..=(m / i) {
            let p = sum[i * (j + 1) - 1];
            let q = sum[i * j - 1];
            let (mut c, mut s) = (p.0 - q.0, p.1 - q.1);
            if j == 1 {
                c -= 1;
                s -= i;
            }
            ans += (c * i - (s - c * j * i)) % MOD;
        }
        ans %= MOD;
    }
    println!("{}", ans);
}

fn main() {
    run();
}

// ---------- begin input macro ----------
// reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
#[macro_export]
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

#[macro_export]
macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};
    ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($iter, $t);
        input_inner!{$iter $($r)*}
    };
}

#[macro_export]
macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };
    ($iter:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
    };
    ($iter:expr, chars) => {
        read_value!($iter, String).chars().collect::<Vec<char>>()
    };
    ($iter:expr, bytes) => {
        read_value!($iter, String).bytes().collect::<Vec<u8>>()
    };
    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };
    ($iter:expr, $t:ty) => {
        $iter.next().unwrap().parse::<$t>().expect("Parse error")
    };
}
// ---------- end input macro ----------