27720573125

素因数分解:

$5^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1\times {\mathrm{431}}^1$

素因数の和:760

約数の個数: 80

約数和(自身を含む): 40497836544

約数和(自身を除く): 12777263419

約数列:

[1, 5, 7, 25, 35, 61, 125, 175, 241, 305, 427, 431, 625, 875, 1205, 1525, 1687, 2135, 2155, 3017, 4375, 6025, 7625, 8435, 10675, 10775, 14701, 15085, 26291, 30125, 38125, 42175, 53375, 53875, 73505, 75425, 102907, 103871, 131455, 150625, 184037, 210875, 266875, 269375, 367525, 377125, 514535, 519355, 657275, 727097, 920185, 1054375, 1837625, 1885625, 2572675, 2596775, 3286375, 3635485, 4600925, 6336131, 9188125, 12863375, 12983875, 16431875, 18177425, 23004625, 31680655, 44352917, 64316875, 64919375, 90887125, 115023125, 158403275, 221764585, 454435625, 792016375, 1108822925, 3960081875, 5544114625, 27720573125]

約数ペア:

[(1, 27720573125), (5, 5544114625), (7, 3960081875), (25, 1108822925), (35, 792016375), (61, 454435625), (125, 221764585), (175, 158403275), (241, 115023125), (305, 90887125), (427, 64919375), (431, 64316875), (625, 44352917), (875, 31680655), (1205, 23004625), (1525, 18177425), (1687, 16431875), (2135, 12983875), (2155, 12863375), (3017, 9188125), (4375, 6336131), (6025, 4600925), (7625, 3635485), (8435, 3286375), (10675, 2596775), (10775, 2572675), (14701, 1885625), (15085, 1837625), (26291, 1054375), (30125, 920185), (38125, 727097), (42175, 657275), (53375, 519355), (53875, 514535), (73505, 377125), (75425, 367525), (102907, 269375), (103871, 266875), (131455, 210875), (150625, 184037)]