20991530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{3613}}^1$

素因数の和:3710

約数の個数: 32

約数和(自身を含む): 43714944

約数和(自身を除く): 22723414

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 83, 166, 415, 581, 830, 1162, 2905, 3613, 5810, 7226, 18065, 25291, 36130, 50582, 126455, 252910, 299879, 599758, 1499395, 2099153, 2998790, 4198306, 10495765, 20991530]

約数ペア:

[(1, 20991530), (2, 10495765), (5, 4198306), (7, 2998790), (10, 2099153), (14, 1499395), (35, 599758), (70, 299879), (83, 252910), (166, 126455), (415, 50582), (581, 36130), (830, 25291), (1162, 18065), (2905, 7226), (3613, 5810)]