lcm {&rest integers} => least-common-multiple
integer---an integer.
least-common-multiple---a non-negative integer.
lcm returns the least common multiple of the integers.
If no integer is supplied, the integer 1 is returned.
If only one integer is supplied, the absolute value of that integer is returned.
For two arguments that are not both zero,
(lcm a b) == (/ (abs (* a b)) (gcd a b))
If one or both arguments are zero,
(lcm a 0) == (lcm 0 a) == 0
For three or more arguments,
(lcm a b c ... z) == (lcm (lcm a b) c ... z)
(lcm 10) => 10 (lcm 25 30) => 150 (lcm -24 18 10) => 360 (lcm 14 35) => 70 (lcm 0 5) => 0 (lcm 1 2 3 4 5 6) => 60
Should signal type-error if any argument is not an integer.
section gcd [Function]
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