21977487

素因数分解:

$3^4\times 7^1\times {\mathrm{83}}^1\times {\mathrm{467}}^1$

素因数の和:569

約数の個数: 40

約数和(自身を含む): 38054016

約数和(自身を除く): 16076529

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 83, 189, 249, 467, 567, 581, 747, 1401, 1743, 2241, 3269, 4203, 5229, 6723, 9807, 12609, 15687, 29421, 37827, 38761, 47061, 88263, 116283, 264789, 271327, 348849, 813981, 1046547, 2441943, 3139641, 7325829, 21977487]

約数ペア:

[(1, 21977487), (3, 7325829), (7, 3139641), (9, 2441943), (21, 1046547), (27, 813981), (63, 348849), (81, 271327), (83, 264789), (189, 116283), (249, 88263), (467, 47061), (567, 38761), (581, 37827), (747, 29421), (1401, 15687), (1743, 12609), (2241, 9807), (3269, 6723), (4203, 5229)]