Find distinct positive integers $n_1<n_2<\dots<n_7$ with the least possible sum, such that their product $n_1 \times n_2 \times \dots \times n_7$ is divisible by $2016$.
To solve the problem, we need to find distinct positive integers \( n_1 < n_2 < \dots < n_7 \) such that their product \( n_1 \times n_2 \times \dots \times n_7 \) is divisible by \( 2016 \). We also want the sum of these integers to be as small as possible.

1. **Factorize 2016**:
   \[
   2016 = 2^5 \times 3^2 \times 7
   \]
   This means that the product of the seven integers must include at least five factors of 2, two factors of 3, and one factor of 7.

2. **Choose the smallest distinct integers**:
   We start by choosing the smallest integers that can provide the necessary factors:
   - To get at least five factors of 2, we can use \( 2, 4, 8 \) (since \( 2 = 2^1 \), \( 4 = 2^2 \), and \( 8 = 2^3 \)).
   - To get at least two factors of 3, we can use \( 3, 6 \) (since \( 3 = 3^1 \) and \( 6 = 2 \times 3 \)).
   - To get at least one factor of 7, we use \( 7 \).

3. **Verify the product**:
   Let's list the smallest distinct integers that meet the criteria:
   \[
   1, 2, 3, 4, 6, 7, 8
   \]
   - \( 1 \) is included to ensure we have seven distinct integers.
   - The product of these integers is:
     \[
     1 \times 2 \times 3 \times 4 \times 6 \times 7 \times 8
     \]
   - Calculate the product step-by-step:
     \[
     1 \times 2 = 2
     \]
     \[
     2 \times 3 = 6
     \]
     \[
     6 \times 4 = 24
     \]
     \[
     24 \times 6 = 144
     \]
     \[
     144 \times 7 = 1008
     \]
     \[
     1008 \times 8 = 8064
     \]
   - Check divisibility:
     \[
     8064 \div 2016 = 4
     \]
     Since 8064 is divisible by 2016, the product meets the requirement.

4. **Calculate the sum**:
   \[
   1 + 2 + 3 + 4 + 6 + 7 + 8 = 31
   \]

5. **Verify if a smaller sum is possible**:
   - We need to ensure that any other combination of seven distinct integers that meets the factorization requirement does not yield a smaller sum.
   - The next smallest integers that could replace any of the chosen ones would increase the sum, as they would be larger than the current smallest integers.

Thus, the smallest sum of distinct positive integers \( n_1 < n_2 < \dots < n_7 \) such that their product is divisible by 2016 is 31.

The final answer is \(\boxed{31}\).