Decompose into primes and find the smallest common multiple n of (16,20) and the largest common divisor D of the pair of numbers (140,100)

Correct result:

n =  80
D =  20


16=24 20=225 LCM(16,20)=245=80  n=LCM(16,20)=80
140=2257 100=2252 GCD(140,100)=225=20  D=GCD(140,100)=20

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