How does academic hiring work in the humanities in Denmark?
Disclaimer: I work as a postdoc in social sciences in a Danish university. I have seen parts of the process from the inside on a few occassions, once very closely. 

In my experience, more than 20 applicants should be considered quite a few, and I suspect this is especially true in the Humanities, unless it is an extremely coveted area. 

Applications are graded qualified/unqualified, usually along with a brief statement on the reasoning. 

The dean may make a shortlist of favourite candidates as a recommendation, but it will usually be the department head making the decision. At my department, relevant senior researchers/associate profs get a say too, and the process is quite democratic. 

I have never heard of anyone being hired without an interview. Test lectures are sometimes used, e.g for tenure-track positions.