Python 基礎知識簡單

數量豐富

「數量豐富」問題的詳細指南和 Python 實作。

問題陳述

簡單

寫一個函數 is_abundant(n) ,它接受正整數 n ,如果 n 是一個豐富的數字,則傳回 True ,否則傳回 False 。充裕數是指其真因數(除該數本身之外的所有因數)總和大於該數的數。

約束條件
  • 1 <= n <= 10^6

範例

Example 1
Input
n = 12
Output
True
Explanation

Proper divisors of 12: 1, 2, 3, 4, 6. Sum = 16. Since 16 > 12, it is abundant.

Example 2
Input
n = 18
Output
True
Explanation

Proper divisors of 18: 1, 2, 3, 6, 9. Sum = 21. Since 21 > 18, it is abundant.

Example 3
Input
n = 7
Output
False
Explanation

Proper divisors of 7: 1. Sum = 1. Since 1 < 7, it is not abundant.

Need a Hint?
考慮使用特定於基礎的資料結構,例如集合或堆。
Edge Cases to Watch
  • 空輸入結構
  • 單元素輸入
  • 大數值範圍

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