28667457

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:143

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 27941823

約数列:

[1, 3, 7, 9, 13, 17, 21, 29, 39, 51, 63, 71, 87, 91, 117, 119, 153, 203, 213, 221, 261, 273, 357, 377, 493, 497, 609, 639, 663, 819, 923, 1071, 1131, 1207, 1479, 1491, 1547, 1827, 1989, 2059, 2639, 2769, 3393, 3451, 3621, 4437, 4473, 4641, 6177, 6409, 6461, 7917, 8307, 8449, 10353, 10863, 13923, 14413, 15691, 18531, 19227, 19383, 23751, 25347, 26767, 31059, 35003, 43239, 44863, 47073, 57681, 58149, 76041, 80301, 105009, 109837, 129717, 134589, 141219, 187369, 240903, 245021, 315027, 329511, 403767, 455039, 562107, 735063, 988533, 1365117, 1686321, 2205189, 3185273, 4095351, 9555819, 28667457]

約数ペア:

[(1, 28667457), (3, 9555819), (7, 4095351), (9, 3185273), (13, 2205189), (17, 1686321), (21, 1365117), (29, 988533), (39, 735063), (51, 562107), (63, 455039), (71, 403767), (87, 329511), (91, 315027), (117, 245021), (119, 240903), (153, 187369), (203, 141219), (213, 134589), (221, 129717), (261, 109837), (273, 105009), (357, 80301), (377, 76041), (493, 58149), (497, 57681), (609, 47073), (639, 44863), (663, 43239), (819, 35003), (923, 31059), (1071, 26767), (1131, 25347), (1207, 23751), (1479, 19383), (1491, 19227), (1547, 18531), (1827, 15691), (1989, 14413), (2059, 13923), (2639, 10863), (2769, 10353), (3393, 8449), (3451, 8307), (3621, 7917), (4437, 6461), (4473, 6409), (4641, 6177)]