```
GCD(12, 10)
GCD(144, 233) # Fibonacci numbers are relatively prime to each other
LCM(12, 10)
LCM(144, 233) # = 144 * 233
# all elements will be flattened by unlist
GCD(2, 3, c(5, 7) * 11)
GCD(c(2*3, 3*5, 5*7))
LCM(c(2, 3, 5, 7) * 11)
LCM(2*3, 3*5, 5*7)
```

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