what is the lowest positive integer that is divisible by each of the integers 1 through 7 , inclusive ?
"the integer should be divisible by : 2 , 3 , 4 ( = 2 ^ 2 ) , 5 , 6 ( = 2 * 3 ) , and 7 . the least common multiple of these integers is lcm = 2 ^ 2 * 3 * 5 * 7 = 420 . answer : a ."
lcm(1, 7)