21691593

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{277}}^1$

素因数の和:414

約数の個数: 48

約数和(自身を含む): 39551616

約数和(自身を除く): 17860023

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 113, 231, 277, 339, 693, 791, 831, 1017, 1243, 1939, 2373, 2493, 3047, 3729, 5817, 7119, 8701, 9141, 11187, 17451, 21329, 26103, 27423, 31301, 63987, 78309, 93903, 191961, 219107, 281709, 344311, 657321, 1032933, 1971963, 2410177, 3098799, 7230531, 21691593]

約数ペア:

[(1, 21691593), (3, 7230531), (7, 3098799), (9, 2410177), (11, 1971963), (21, 1032933), (33, 657321), (63, 344311), (77, 281709), (99, 219107), (113, 191961), (231, 93903), (277, 78309), (339, 63987), (693, 31301), (791, 27423), (831, 26103), (1017, 21329), (1243, 17451), (1939, 11187), (2373, 9141), (2493, 8701), (3047, 7119), (3729, 5817)]