#include <bits/stdc++.h>
using namespace std;
#define int long long
int __ = 1,n;
const int N = 1e5 + 5;

int b[N];
int mn,k;
bool check(int x)
{
    return x > mn && x - mn <= k;
}
struct gc
{
    int l,r,id;
};
struct node
{
    int id;
}seg[N << 2];
using pii = pair<int,int>;
#define mid (l + r >> 1)
#define lson rt << 1,l,mid
#define rson rt << 1|1,mid + 1,r
void pushup(int x)
{
    if(b[seg[x << 1].id] > b[seg[x << 1|1].id]) seg[x].id = seg[x << 1|1].id;
    else seg[x].id = seg[x << 1].id;
}
void build(int rt,int l,int r)
{
    if(l == r)
    {
        seg[rt].id = l;
        return;
    }
    build(lson),build(rson);
    pushup(rt);
}
int query(int rt,int l,int r,int L,int R)
{
    if(l >= L && r <= R) return seg[rt].id;
    int res = 0;
    if(mid >= L) res = query(lson,L,R);
    if(mid < R)
    {
        int t = query(rson,L,R);
        if(b[t] < b[res]) res = t;
    }
    return res;
}
void solve(){
    b[0] = 2e9;
    int n;
    cin >> n >> k;
    mn = 1e9;
    for(int i = 1; i <= n; i++) cin >> b[i], mn = min(mn,b[i]);
    build(1,1,n);
    int g = 0;
    queue<gc> q;
    q.push({1,n,query(1,1,n,1,n)});
    while(q.size())
    {
        auto [l,r,id] = q.front();
        q.pop();
        if(l <= id - 1)
        {
            int mnl = query(1,1,n,l,id - 1);
            g = gcd(g,b[mnl] - b[id]);
            q.push({l,id - 1,mnl});
        }
        if(id + 1 <= r)
        {
            int mnr = query(1,1,n,id + 1,r);
            g = gcd(g,b[mnr] - b[id]);
            q.push({id + 1,r,mnr});
        }
    }
    if(g == 0)
    {
        cout << k << ' ' << (1 + k) * k / 2 << endl;
        return;
    }
    int cnt = 0, sum = 0;
    for(int i = 1; i <= g / i; i++)
        if(g % i == 0)
        {
            if(check(i)) cnt ++, sum += i - mn;
            if(i * i != g && check(g/i)) cnt ++, sum += g / i - mn;
        }
    cout << cnt << ' ' << sum << endl;
}
signed main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);
    cin >> __;
    while (__--){
        solve();
    }
    return 0;
}