Outgoing links solution

I have a Real Estate site that generates homes with a plugin. This plugin generates the html in my site for the homes and into that html there are many outgoing links. For each property there is an outgoing link to an external domain.

I can not control the links, so I can not put a nofollow tag to each one of these links.

Do you think it is a good idea to block the outgoing links in robots.txt for google not to see so many?

Thanks

from Google https://ift.tt/2YvXqaB
via IFTTT