decode to hex
Header byte: 05 (05 is p2sh, commonly known as multi-sig with a "3" at the beginning)
hash160: dc2047e70aeac3df47eb8a8aa676db7d8efe2278
checksum: 86ea9db1 (for error checking)
1M4vL7mvrKcG2mHas11snsbpktXtqNYJiD
decode to hex
Header byte: 00 (00 is p2pkh, normal bitcoin addresses with a "1" at the beginning)
hash160: dc2047e70aeac3df47eb8a8aa676db7d8efe2278
checksum: 13dacaa2 (for error checking)
Notice they are using the exact same hash.
I would bet a large sum of money that the rich list does not recognize the 05 header byte (meaning it is not optimized for multi-sig) and just made the address using the hash that was in the output assuming it was a normal bitcoin address.