The all-rounder 117 not out, his career-best List A score, featured 13 fours and four sixes.
It was the cornerstone of Pakistan's commanding 358 for seven from 50 overs at a windswept Beckenham and that proved far too much for a makeshift Kent side.
Fakhar Zaman, a star of the Pakistan side that won the 2017 Champions Trophy in England, made 76 and Haris Sohail 75.
Kent then collapsed to 258 all out with more than five overs remaining in reply, left-arm spinner Imran Qayyum taking four for 45 from his maximum 10 overs.
Pakistan continue their tour with county matches against Northamptonshire and Leicestershire on Monday and Wednesday respectively.
They then play England in a one-off Twenty20 international in Cardiff a week on Sunday before facing the hosts of the Cricket World Cup - which starts next month - in the first of five one-day internationals at The Oval on May 8.