36 lines
556 B
Python
36 lines
556 B
Python
def phi(x, lis):
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out = 1
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for p in lis:
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if x % p == 0:
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k = 0
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while x % p == 0:
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k += 1
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x /= p
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out *= p ** (k - 1) * (p - 1)
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if x <= p ** 2:
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if x == 1:
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return out
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return out * (x - 1)
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def makep(x):
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p = [2]
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P = [2]
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n = 3
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while n < x:
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for i in p:
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if n % i == 0:
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break
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else:
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P.append(n)
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n += 2
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while n > p[-1] ** 2:
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p.append(P[len(p)])
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return P
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prime = makep(1010)
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total = 0
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for i in xrange(2, 1000001):
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total += phi(i, prime)
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print total
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