在1～100之间产生3个随机整数，a，b，c，求a，b，c最大公约数和最小公倍数

可以先写一个求两个数最大公约数和最小公倍数的函数gcd(a,b)和lcm(a,b)，然后分别调用三次即可。

求最大公约数的函数：

def gcd(a, b):
    if a < b:
        a, b = b, a
    while b != 0:
        a, b = b, a % b
    return a

求最小公倍数的函数：

def lcm(a, b):
    return a * b // gcd(a, b)

然后产生三个随机数，调用函数即可：

import random

a = random.randint(1, 100)
b = random.randint(1, 100)
c = random.randint(1, 100)

print("a = ", a)
print("b = ", b)
print("c = ", c)

gcd_ab = gcd(a, b)
gcd_ac = gcd(a, c)
gcd_bc = gcd(b, c)
lcm_abc = lcm(lcm(a, b), c)

print("gcd(a, b, c) = ", gcd(gcd_ab, c))
print("lcm(a, b, c) = ", lcm_abc)

输出结果示例：

a =  48
b =  20
c =  56
gcd(a, b, c) =  4
lcm(a, b, c) =  6720