25 lines
765 B
Python
25 lines
765 B
Python
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def amicable_numbers_sum(limit):
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if not isinstance(limit, int):
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return "Input is not an integer!"
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if limit < 1:
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return "Input must be bigger than 0!"
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amicables = set()
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for num in range(2, limit+1):
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if num in amicables:
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continue
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sum_fact = sum([fact for fact in range(1, num) if num % fact == 0])
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sum_fact2 = sum([fact for fact in range(1, sum_fact) if sum_fact % fact == 0])
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if num == sum_fact2 and num != sum_fact:
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amicables.add(num)
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amicables.add(sum_fact2)
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return sum(amicables)
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print(amicable_numbers_sum(9999))
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print(amicable_numbers_sum(999))
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print(amicable_numbers_sum(99))
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