If two positive integers p and q can be expressed as p = a b square and q equals a cube b where a and b being prime numbers then find the lcm of p and q

Carli has 90 apps on her phone. braylen has half the amount of apps as theiss. if carli has three timesthe amount of apps as theiss,how many apps does braylen have? let b represent the number of braylen's apps and t represent the number of theiss's apps.