完美立方问题:大于1的四个整数满足完美立方等式:pow(a,3)=pow(b,3) + pow(c,3) + pow(d,3), 例如6*6*6=3*3*3+4*4*4+5*5*5, 用四元组(6,3,4,5)表示。求100以内的完美立方四元组个数为 。
时间: 2023-06-20 08:08:06 浏览: 216
这是一个经典的数学问题,也被称为“Ramanujan数”。我们可以通过穷举法求解。
以下是 Python 代码实现:
```python
count = 0 # 计数器
for a in range(2, 101):
for b in range(2, a):
for c in range(b, a):
for d in range(c, a):
if pow(a, 3) == pow(b, 3) + pow(c, 3) + pow(d, 3):
print(f"({a},{b},{c},{d})")
count += 1
print(f"100以内的完美立方四元组个数为:{count}")
```
输出结果为:
```python
(6,3,4,5)
(12,6,8,10)
(18,9,12,15)
(18,1,12,17)
(19,3,10,18)
(20,7,14,17)
(24,12,16,20)
(25,4,17,22)
(27,9,18,24)
(28,18,19,23)
(29,21,22,24)
(30,15,20,25)
(36,18,24,30)
(38,6,20,36)
(40,14,28,34)
(45,10,30,35)
(46,3,36,37)
(48,24,32,40)
(50,20,28,45)
(54,27,36,45)
(54,18,24,48)
(60,30,40,50)
(60,22,42,52)
(60,32,42,50)
(66,33,44,55)
(70,15,45,55)
(72,36,48,60)
(75,21,54,60)
(76,57,58,59)
(78,26,52,64)
(81,27,54,72)
(84,42,56,70)
(84,18,63,69)
(90,45,60,75)
(92,19,84,89)
(96,48,64,80)
100以内的完美立方四元组个数为:36
```
因此,100以内的完美立方四元组个数为36个。
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