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211.py
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import math,time
def naiti_prostie_i_deliteli_menshe(n, m):
vsen = [True] * (n+1)
# esli vsen[k] == True znachit mi eshyo ne vikinuli k.
# esli vsen[k] == False, znachit mi uzhe vikinuli k.
prostie = []
deliteli = []
# deliteli chisel mi budem sohranyat' v spiske spiskov
# naprimer deliteli[5] eto spisok prostih deliteley 5, to est' [5],
# deliteli[10] = [2, 5]
# Snachala nado inicializirovat' nash spisok deliteli
for i in xrange(m):
deliteli.append([])
koren = math.sqrt(n)
p = 2
while p <= koren:
# Zapominaem nashe prostoe chislo
prostie.append(p)
# Teper' vikidivayem iz spiska vsen, chisla kotorie delyatsya
# na p.
for i in xrange(p, n+1, p):
vsen[i] = False
# chislo i delitsya na p, dobavlyayem p v spisok ego deliteley
if i < m:
deliteli[i].append(p)
chislo = i/p
while True:
if chislo % p == 0:
deliteli[i].append(p)
chislo = chislo / p
else:
break
# Teper' nahodim pervoy chislo v spiske vsen, kotoroe mi eshyo
# ne vikinuli, i zapominaem ego v p.
for i in xrange(p, n+1):
if vsen[i] == True:
p = i
break
# Kogda mi viydem iz cikla, vse ostavshiesya chisla v spiske
# vsen budut prostimi. Ih nado prosto dobavit' v spisok prostie
for i in xrange(p, n+1):
if vsen[i] == True:
prostie.append(i)
if i < m:
if i % 200000 == 0:
print i
for k in xrange(i, m, i):
deliteli[k].append(i)
chislo = k/i
while True:
if chislo % i == 0:
deliteli[k].append(i)
chislo = chislo / i
else:
break
return prostie, deliteli
def nayti_prostie_deliteli(n, prostie, tt, de):
max_de = len(de)
if n in tt:
return [n]
if n < max_de:
return de[n]
if not n in tt:
m = n
deliteli = []
posledniy_index = 0
num_prostih = len(prostie)
while True:
nashli = False
for ind in xrange(posledniy_index, num_prostih):
p = prostie[ind]
if m % p == 0:
m = m / p
deliteli.append(p)
posledniy_index = ind
nashli = True
break
if m in tt:
deliteli.append(m)
return deliteli
if m == 1:
return deliteli
if m < max_de:
deliteli.extend(de[m])
break
if not nashli:
print "Nuzhno bol'she prostih chisel, etih ne hvatilo"
return []
return deliteli
def dilitili(a):
suma = 1
for i in a:
suma *= 1 + i ** 2
return suma
def summa_kvadratov_deliteley(dels):
dd = {}
for d in dels:
if d not in dd:
dd[d] = 1
else:
dd[d] += 1
r = 1
for d, c in dd.iteritems():
s = 0
for i in xrange(c+1):
s += pow(d, 2*i)
r *= s
return r
nnn = time.time()
pros, de = naiti_prostie_i_deliteli_menshe(64000000, 20000000)
ad = set(pros)
s = 0
for i in xrange(2,64000000):
if i % 100000 == 0:
print i
a = nayti_prostie_deliteli(i, pros, ad, de)
d = summa_kvadratov_deliteley(a)
if math.sqrt(d) % 1 == 0:
if int(math.sqrt(d)) ** 2 == d:
s += i
kkk = time.time()
print s-1,kkk-nnn