What is the sum of all positive integers v for which lcm[v,20]=60?
3 + 6 + 12 + 15 + 30 =66
I believe we need to include 60, as well
So...the sum is 66 + 60 = 126
https://web2.0calc.com/questions/what-is-the-sum-of-all-positive-integers-v-for-which-lcm-v-20-60#r1