24 lines
587 B
Python
24 lines
587 B
Python
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def all_factor(num):
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factors = [1]
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sqrt = int(num ** 0.5)
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if sqrt ** 2 == num:
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factors.append(sqrt)
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sqrt -= 1
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for x in range(2, sqrt + 1):
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if not (num % x):
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factors += [x, num // x]
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return factors
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def count_amicable(begin, end):
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total = 0
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while begin < end:
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factor_sum = sum(all_factor(begin))
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if (sum(all_factor(factor_sum)) == begin) and (factor_sum != begin):
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total += begin + factor_sum
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begin = factor_sum
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begin += 1
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return total
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print(count_amicable(200, 10000))
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