Determine if there exists a positive integer $n$ such that $n$ has exactly $2000$ prime divisors and $2^{n}+1$ is divisible by $n$.
1. **Base Case Verification:**
   We start by verifying the base case for the induction. We need to show that \(3^m \mid 2^{3^m} + 1\) for \(m = 1\):
   \[
   2^{3^1} + 1 = 2^3 + 1 = 8 + 1 = 9
   \]
   Since \(9\) is divisible by \(3\), the base case holds.

2. **Inductive Step:**
   Assume that \(3^m \mid 2^{3^m} + 1\) for some \(m \geq 1\). We need to show that \(3^{m+1} \mid 2^{3^{m+1}} + 1\):
   \[
   2^{3^{m+1}} + 1 = 2^{3 \cdot 3^m} + 1 = (2^{3^m})^3 + 1
   \]
   Using the identity \(a^3 + b^3 = (a + b)(a^2 - ab + b^2)\), we get:
   \[
   2^{3^{m+1}} + 1 = (2^{3^m} + 1)(2^{2 \cdot 3^m} - 2^{3^m} + 1)
   \]
   By the induction hypothesis, \(3^m \mid 2^{3^m} + 1\). We need to show that \(3 \mid 2^{2 \cdot 3^m} - 2^{3^m} + 1\):
   \[
   2^{2 \cdot 3^m} \equiv 1 \pmod{3} \quad \text{and} \quad 2^{3^m} \equiv -1 \pmod{3}
   \]
   Therefore:
   \[
   2^{2 \cdot 3^m} - 2^{3^m} + 1 \equiv 1 - (-1) + 1 \equiv 3 \equiv 0 \pmod{3}
   \]
   Hence, \(3^{m+1} \mid 2^{3^{m+1}} + 1\), completing the inductive step.

3. **Prime Divisors of \(a^3 + 1\):**
   We need to show that for \(a \in \mathbb{Z}_+\) and \(a > 2\), the number \(a^3 + 1\) has a prime divisor that is not a prime divisor of \(a + 1\):
   \[
   a^3 + 1 = (a + 1)(a^2 - a + 1)
   \]
   Consider the greatest common divisor \(\gcd(a + 1, a^2 - a + 1)\). If \(d\) is a common divisor, then:
   \[
   d \mid (a^2 - a + 1) - a(a + 1) = 1
   \]
   Thus, \(\gcd(a + 1, a^2 - a + 1) = 1\), meaning \(a^2 - a + 1\) has a prime divisor not dividing \(a + 1\).

4. **Constructing \(n\):**
   We construct \(n\) such that \(n = 3^s p_1 p_2 \ldots p_k\) and \(n \mid 2^n + 1\). For \(k = 0\), \(n = 3\) works since \(3 \mid 2^3 + 1\).

   Assume \(n = 3^s p_1 p_2 \ldots p_k\) works for some \(k \geq 0\). Consider:
   \[
   2^{3n} + 1 = (2^n + 1)(2^{2n} - 2^n + 1)
   \]
   By the previous result, \(2^{3n} + 1\) has a prime divisor \(p_{k+1}\) not among \(p_1, p_2, \ldots, p_k\). Thus, \(n' = 3^s p_1 p_2 \ldots p_k p_{k+1}\) works.

5. **Conclusion:**
   By induction, we can construct \(n\) with exactly \(2000\) prime divisors such that \(n \mid 2^n + 1\).

The final answer is \( \boxed{ n = 3^s p_1 p_2 \ldots p_{1999} } \).