1 files changed, 11 insertions, 0 deletions
diff --git a/content/math/divisors.cpp b/content/math/divisors.cpp
new file mode 100644
index 0000000..5afd4fb
--- /dev/null
+++ b/content/math/divisors.cpp
@@ -0,0 +1,11 @@
+ll countDivisors(ll n) {
+	ll res = 1;
+	for (ll i = 2; i * i * i <= n; i++) {
+		ll c = 0;
+		while (n % i == 0) {n /= i; c++;}
+		res *= c + 1;
+	}
+	if (isPrime(n)) res *= 2;
+	else if (n > 1) res *= isSquare(n) ? 3 : 4;
+	return res;
+}