208545525

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1031}}^1$

素因数の和:1107

約数の個数: 72

約数和(自身を含む): 399260160

約数和(自身を除く): 190714635

約数列:

[1, 3, 5, 9, 15, 25, 29, 31, 45, 75, 87, 93, 145, 155, 225, 261, 279, 435, 465, 725, 775, 899, 1031, 1305, 1395, 2175, 2325, 2697, 3093, 4495, 5155, 6525, 6975, 8091, 9279, 13485, 15465, 22475, 25775, 29899, 31961, 40455, 46395, 67425, 77325, 89697, 95883, 149495, 159805, 202275, 231975, 269091, 287649, 448485, 479415, 747475, 799025, 926869, 1345455, 1438245, 2242425, 2397075, 2780607, 4634345, 6727275, 7191225, 8341821, 13903035, 23171725, 41709105, 69515175, 208545525]

約数ペア:

[(1, 208545525), (3, 69515175), (5, 41709105), (9, 23171725), (15, 13903035), (25, 8341821), (29, 7191225), (31, 6727275), (45, 4634345), (75, 2780607), (87, 2397075), (93, 2242425), (145, 1438245), (155, 1345455), (225, 926869), (261, 799025), (279, 747475), (435, 479415), (465, 448485), (725, 287649), (775, 269091), (899, 231975), (1031, 202275), (1305, 159805), (1395, 149495), (2175, 95883), (2325, 89697), (2697, 77325), (3093, 67425), (4495, 46395), (5155, 40455), (6525, 31961), (6975, 29899), (8091, 25775), (9279, 22475), (13485, 15465)]