18860121

素因数分解:

$3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:116

約数の個数: 80

約数和(自身を含む): 35312640

約数和(自身を除く): 16452519

約数列:

[1, 3, 7, 9, 21, 27, 29, 31, 37, 63, 81, 87, 93, 111, 189, 203, 217, 259, 261, 279, 333, 567, 609, 651, 777, 783, 837, 899, 999, 1073, 1147, 1827, 1953, 2331, 2349, 2511, 2697, 2997, 3219, 3441, 5481, 5859, 6293, 6993, 7511, 8029, 8091, 9657, 10323, 16443, 17577, 18879, 20979, 22533, 24087, 24273, 28971, 30969, 33263, 56637, 67599, 72261, 72819, 86913, 92907, 99789, 169911, 202797, 216783, 232841, 299367, 509733, 608391, 650349, 698523, 898101, 2095569, 2694303, 6286707, 18860121]

約数ペア:

[(1, 18860121), (3, 6286707), (7, 2694303), (9, 2095569), (21, 898101), (27, 698523), (29, 650349), (31, 608391), (37, 509733), (63, 299367), (81, 232841), (87, 216783), (93, 202797), (111, 169911), (189, 99789), (203, 92907), (217, 86913), (259, 72819), (261, 72261), (279, 67599), (333, 56637), (567, 33263), (609, 30969), (651, 28971), (777, 24273), (783, 24087), (837, 22533), (899, 20979), (999, 18879), (1073, 17577), (1147, 16443), (1827, 10323), (1953, 9657), (2331, 8091), (2349, 8029), (2511, 7511), (2697, 6993), (2997, 6293), (3219, 5859), (3441, 5481)]