You need at least two numbers to find an LCM no matter what method you choose.
It is: 32*25 = 288
It is: 22*32*52 = 900
The prime factorization of 25 using exponents is: 52
The prime factorization of 25 using exponents is 52
5 x 5 = 25 5 x 7 = 35 5 x 5 x 7 = 175, the LCM
The prime factorization, using exponents, of 160 is: 25 x 5
25 5,5
52 = 25
LCM is 96, which is the multiple of the highest power of prime factors in the given numbers (25 x 3).
25 = 32