21690666

素因数分解:

$2^1\times 3^9\times {\mathrm{19}}^1\times {\mathrm{29}}^1$

素因数の和:77

約数の個数: 80

約数和(自身を含む): 53143200

約数和(自身を除く): 31452534

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 29, 38, 54, 57, 58, 81, 87, 114, 162, 171, 174, 243, 261, 342, 486, 513, 522, 551, 729, 783, 1026, 1102, 1458, 1539, 1566, 1653, 2187, 2349, 3078, 3306, 4374, 4617, 4698, 4959, 6561, 7047, 9234, 9918, 13122, 13851, 14094, 14877, 19683, 21141, 27702, 29754, 39366, 41553, 42282, 44631, 63423, 83106, 89262, 124659, 126846, 133893, 190269, 249318, 267786, 373977, 380538, 401679, 570807, 747954, 803358, 1141614, 1205037, 2410074, 3615111, 7230222, 10845333, 21690666]

約数ペア:

[(1, 21690666), (2, 10845333), (3, 7230222), (6, 3615111), (9, 2410074), (18, 1205037), (19, 1141614), (27, 803358), (29, 747954), (38, 570807), (54, 401679), (57, 380538), (58, 373977), (81, 267786), (87, 249318), (114, 190269), (162, 133893), (171, 126846), (174, 124659), (243, 89262), (261, 83106), (342, 63423), (486, 44631), (513, 42282), (522, 41553), (551, 39366), (729, 29754), (783, 27702), (1026, 21141), (1102, 19683), (1458, 14877), (1539, 14094), (1566, 13851), (1653, 13122), (2187, 9918), (2349, 9234), (3078, 7047), (3306, 6561), (4374, 4959), (4617, 4698)]