How could an AI fill the universe with paperclips without violating all kinds of property rights, probably prohibitions against mass murder (assuming it kills lots of humans as a side effect), financial and other fraud to aquire enough resources, etc...[?])

I have no idea myself, but if I had the power to exponentially increase my intelligence beyond that of any human, I bet I could figure something out.

The law has some quirks. I'd suggest that any system of human law necessarily has some ambiguities, confusions and, internal contradictions. Laws are composed largely of leaky generalizations. When the laws regulate mere humans, we tend to get by, tolerating a certain amount of unfairness and injustice.

For example, I've seen a plausible argument that "there is a 50-square-mile swath of Idaho in which one can commit felonies with impunity. This is because of the intersection of a poorly drafted statute with a clear but neglected constitutional provision: the Sixth Amendment's Vicinage Clause."

There's also a story about Kurt Gödel nearly blowing his U.S. citizenship hearing by offering his thoughts on how to hack the U.S. Constitution to "allow the U.S. to be turned into a dictatorship."