LCD(2520, 4) = 2520.
LCD of 4 and 19 is 76.
12 is the LCD for 3 and 4.
The LCD of 4 and 16 would be 4.
The LCD of 5 and 4 is 20.
LCD(25, 20, 4) = 100.
LCD(4, 2, 9) = 36
LCD(4, 8, 11) = 88.
LCD(7, 4) = 28
LCD(4, 16, 64) = 64
LCD(3, 5, 4, 2) = 60
LCD(5, 4, 10, 3) = 60
LCD(24, 12, 16, 4, 11) = 528