#define LOCAL
#include <bits/stdc++.h>
#define fir first
#define sec second
#define el '\n'

#ifdef LOCAL
#define FINISH cerr << "FINISH" << endl;
#else
#define FINISH ;
#endif

#ifdef LOCAL
#define debug(x) cerr << setw(4) << #x << " == " << x << endl
#else
#define debug(x)
#endif

#ifdef LOCAL
#define debugv(x)                   \
	cerr << setw(4) << #x << ":: "; \
	for (auto i : x)                \
		cerr << i << " ";           \
	cerr << endl
#else
#define debugv(x)
#endif

using namespace std;
typedef long long ll;
typedef pair<int, int> PII;
ostream& operator<<(ostream& out, PII& x)
{
	out << x.fir << " " << x.sec << endl;
	return out;
}

const int mod = 998244353;
const int inf = 0x3f3f3f3f;
const int N = 200020;
void solve()
{
	int n, k;
	cin >> n >> k;
	vector<int> a(n + 1, 0);
	for (int i = 1; i <= n; i++) {
		cin >> a[i];
	}
	if (n == 1) {
		cout << k << " " << 1ll * (k + 1) * k / 2 << el;
		return;
	}
	unordered_map<int, int> ans;
	int nowans = 0;
	auto merge = [&](auto& self, int l, int r) {
		if (l >= r)
			return;
		int mn = inf;
		for (int i = l; i <= r; i++) {
			mn = min(mn, a[i]);
		}
		// cout << l << " " << r << " " << mn << endl;
		int g = 0;
		for (int i = l + 1; i <= r; i++) {
			int res = abs(a[i] - a[i - 1]);
			g = __gcd(g, res);
		}
		if (g == 0)
			return;
		if (l == 1 && r == n) {
			for (int i = 1; i * i <= g; i++) {
				if (g % i == 0) {
					if (i > mn)
						ans[i - mn] = 1;
					if (g / i > mn)
						ans[g / i - mn] = 1;
				}
			}
			nowans = 1;
		}
		else {
			for (int i = 1; i * i <= g; i++) {
				if (i * i == g) {
					if (i > mn)
						ans[i - mn]++;
				}
				else if (g % i == 0) {
					if (i > mn)
						ans[i - mn]++;
					if (g / i > mn)
						ans[g / i - mn]++;
				}
			}
			nowans++;
		}
		int las = l - 1;
		for (int i = l; i <= r; i++) {
			if (a[i] == mn) {
				self(self, las + 1, i - 1);
				las = i;
			}
			else if (i == r) {
				self(self, las + 1, r);
			}
		}
	};
	merge(merge, 1, n);
	int tmp = 0;
	ll answer = 0;
	for (auto [x, y] : ans) {
		if (y == nowans) {
			tmp++, answer += x;
		}
	}
	cout << tmp << " " << answer << el;
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);
	int T = 1;
	cin >> T;
	while (T--) {
		solve();
	}
	return 0;
}