解题思路:
注意事项:
参考代码:
def isprime(x): lt=[2,3,5,7] ls=['1','3','7','9'] if x in lt: return 1 if x>10 and str(x)[-1] in ls: s=0 for i in range(2,x//2+1): if x%i==0: s=1 break if s==0: return 1 a,b=map(int,input().split()) ls=[] for i in range(2,b+1): if isprime(i): ls.append(i) #print(ls) for i in range(a,b+1): n=i m=n lt=[] while n not in ls: for i in ls: if n%i==0: lt.append(i) n//=i break lt.append(n) print(f'{m}=',end='') st='' for i in lt: st+='*'+str(i) print(st[1:])
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