Lansweeper does not scan information that will say if a software is 32-bit or 64-bit. Lansweeper only gives back if a machine's OS is 64 bit or 32 bit. The software that is scanned mimics the add/remove programs window. The information is however scanned in the registry so it may be possible to look up if specific software has a registry that will give back if the software is 32 bit. Registry values can be scanned with custom registry scanning found under Scanning\File & Registry Scanning. You can find information on scanning the registry in
this knowledge base article.