新增: perfect_new.py,解决了perfect.py会把1当作完美数输出的问题
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"""
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找出1~9999之间的所有完美数
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完美数是除自身外其他所有因子的和正好等于这个数本身的数
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例如: 6 = 1 + 2 + 3, 28 = 1 + 2 + 4 + 7 + 14
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Differ: "1" 不是完美数
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Version: 0.2
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Author: Griffin Chen
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Date: 2021-6-23
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"""
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import math
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for num in range(2, 10000):
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result = 0
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for factor in range(1, int(math.sqrt(num)) + 1):
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if num % factor == 0:
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result += factor
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if 1 < factor != num // factor:
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result += num // factor
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if result == num:
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print(num)
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