404 Page Error with # permalink

First, I apologize for my clumsy wording on this post. I’m not exactly sure what I’m really talking about. I have 5 pages on my website that are getting 404 page errors. Normally, I would try and redirect, but these errors will not redirect to another page. They all have a “#” in the url. I set this blog up years ago, have no memory of putting this in the url, creating this group, whatever I did. If you change the “#” to “%23” you can see the page. It’s not even really a page, just one of the pictures from a blog post. Does anyone know how to get rid of this, or correct it? I appreciate any info you can provide!!
Thanks so much!

The page I need help with: [log in to see the link]