21467511

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:110

約数の個数: 80

約数和(自身を含む): 38623200

約数和(自身を除く): 17155689

約数列:

[1, 3, 9, 13, 19, 27, 29, 37, 39, 57, 81, 87, 111, 117, 171, 247, 261, 333, 351, 377, 481, 513, 551, 703, 741, 783, 999, 1053, 1073, 1131, 1443, 1539, 1653, 2109, 2223, 2349, 2997, 3219, 3393, 4329, 4959, 6327, 6669, 7163, 9139, 9657, 10179, 12987, 13949, 14877, 18981, 20007, 20387, 21489, 27417, 28971, 30537, 38961, 41847, 44631, 56943, 61161, 64467, 82251, 86913, 125541, 183483, 193401, 246753, 265031, 376623, 550449, 580203, 740259, 795093, 1129869, 1651347, 2385279, 7155837, 21467511]

約数ペア:

[(1, 21467511), (3, 7155837), (9, 2385279), (13, 1651347), (19, 1129869), (27, 795093), (29, 740259), (37, 580203), (39, 550449), (57, 376623), (81, 265031), (87, 246753), (111, 193401), (117, 183483), (171, 125541), (247, 86913), (261, 82251), (333, 64467), (351, 61161), (377, 56943), (481, 44631), (513, 41847), (551, 38961), (703, 30537), (741, 28971), (783, 27417), (999, 21489), (1053, 20387), (1073, 20007), (1131, 18981), (1443, 14877), (1539, 13949), (1653, 12987), (2109, 10179), (2223, 9657), (2349, 9139), (2997, 7163), (3219, 6669), (3393, 6327), (4329, 4959)]