Function to check if a number is a perfect number. """ # Start with the sum of divisors as 0 sum_of_divisors = 0 # Loop through all potential divisors from 1 to n/2 for i in range(1, n//2 + 1): if n % i == 0: # If i is a divisor of n sum_of_divisors += i #...
""" Returns an unsorted list of the divisors of n""" divs = [1] for p, e in factorization(n): divs += [x*p**k for k in range(1,e+1) for x in divs] return divs n = 600851475143 primeslist = primes(int(n**0.5)+1) print(divisors(n)) 1. 2. 3. 4. 5. 6. 7. 8....
Write a Python program to find the missing digits in a numeric ID that should contain all digits from 0 to 9. Go to: Python Basic Exercises Home ↩ Python Exercises Home ↩ Previous:Write a Python program to find the number of divisors of a given integer is even or odd. Next:Write...
1 # get a number input from the user 2 num_str = raw_input('Enter a number: ') 3 4 # change the number(type of str) to a integer 5 num_num = int(num_str) 6 7 # make a list range of [1, num_num] 8 fac_list = range(1, num_num + 1) 9 print 'BEFORE:', repr(fa...
Write a Python function that computes the sum of proper divisors of a number and checks if it equals the number. Write a Python function that uses a loop to find all proper divisors of a number and then compares the sum to the number. Write a Python function that implements a generator ...
(k) sum += k # Can use += to avoid repetition, and k is an int already # Return the sum of all divisors of n, not including n return sum 如果print纯粹用于调试,并且可以删除,这将简化为one-liner,使用优化的sum函数+生成器表达式: def sum_divisors(n): return sum(k for k in range(...
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Has no positive divisors other than 1 and itself. def isPrime(number): # rule 1: number should be positive, and greater than 1. if number > 1: # iterate over a range from 2 to half the number. for i in range(2, number//2): ...
('z 是最小的')py **Finger exercise:** Write a program that examines three variables—`x`, `y`, and `z`—and prints the largest odd number among them. If none of them are odd, it should print the smallest value of the three. You can attack this exercise in a number of ways. ...
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