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DIVSUM - Divisor Summation |
Given a natural number n (1 <= n <= 500000), please output the summation of all its proper divisors.
Definition: A proper divisor of a natural number is the divisor that is strictly less than the number.
e.g. number 20 has 5 proper divisors: 1, 2, 4, 5, 10, and the divisor summation is: 1 + 2 + 4 + 5 + 10 = 22.
Input
An integer stating the number of test cases (equal to about 200000), and that many lines follow, each containing one integer between 1 and 500000 inclusive.
Output
One integer each line: the divisor summation of the integer given respectively.
Example
Sample Input: 3 2 10 20 Sample Output: 1 8 22
Warning: large Input/Output data, be careful with certain languages
Added by: | Neal Zane |
Date: | 2004-06-10 |
Time limit: | 3s |
Source limit: | 5000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All |
Resource: | Neal Zane |
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2016-02-10 18:10:03
How to wite test case in program? |
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2016-02-01 08:20:43 Abhishek Kumar Singh
For those who are getting WA, take care of the square no.'s.That is no's such as 16. |
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2016-01-19 16:25:07 Nallagatla Manikanta
For n=1, answer should be 0. Cost me 1 WA!! Got AC finally! |
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2016-01-17 19:09:07
Hello everybody, Could anybody explain me why runtime error is occuring in my judge, (I have tested the program on my c++ compiler , the answer is being correcly for every case also 1) |
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2016-01-02 12:26:58
For n=1, answer should be 0. Cost me 1 WA!! Got AC finally! |
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2015-12-27 00:43:39
Can anyone give me a test with O(log n)? |
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2015-12-17 14:32:11
C# TLE |
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2015-12-17 08:49:41 Archil K Srivastava
I don't know why i am getting wrong answer. I expected a TLE but definitely not a WA. Submission id 15882395 Edit: AC :) (I am dumb) Last edit: 2015-12-17 19:13:22 |
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2015-12-05 17:37:33
@Anchrondite answer for input 1 must be zero its because we need to consider proper divisors that are less than the given number so for number only divisor is 1 but it is not a proper divisor as it is not less than 1 i hope u got. |
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2015-12-04 08:03:18
hi...can anyone please give me some test cases as i am getting wrong answer the whole way even though in my testing on my laptop i am getting right answers...please help...thank you in advance |