45
720 = 24 × 32 × 5
5 5 x 7 = 35 The LCM is 35.
Prime Factorization: 2*5*31
No it isn't. 235/5 = 47 and 47 is a prim number. 235 isn't a prime number so it isn't a prim factorization. The real factorization is 47 * 5.
115 = 5 × 23
2 x 32 x 5 x 7 = 630
It is: 2^5 times 5^5 = 100,000
65 = 5 × 13
140 = 22 × 5 × 7
105 = 3 × 5 × 7
50 = 2 x 5 x 5
3 x 5 x 5 x 5