21306593

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:473

約数の個数: 32

約数和(自身を含む): 28885248

約数和(自身を除く): 7578655

約数列:

[1, 7, 11, 17, 41, 77, 119, 187, 287, 397, 451, 697, 1309, 2779, 3157, 4367, 4879, 6749, 7667, 16277, 30569, 47243, 53669, 74239, 113939, 179047, 276709, 519673, 1253329, 1936963, 3043799, 21306593]

約数ペア:

[(1, 21306593), (7, 3043799), (11, 1936963), (17, 1253329), (41, 519673), (77, 276709), (119, 179047), (187, 113939), (287, 74239), (397, 53669), (451, 47243), (697, 30569), (1309, 16277), (2779, 7667), (3157, 6749), (4367, 4879)]