20395816

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{661}}^1$

素因数の和:722

約数の個数: 64

約数和(自身を含む): 47664000

約数和(自身を除く): 27268184

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 29, 38, 56, 58, 76, 116, 133, 152, 203, 232, 266, 406, 532, 551, 661, 812, 1064, 1102, 1322, 1624, 2204, 2644, 3857, 4408, 4627, 5288, 7714, 9254, 12559, 15428, 18508, 19169, 25118, 30856, 37016, 38338, 50236, 76676, 87913, 100472, 134183, 153352, 175826, 268366, 351652, 364211, 536732, 703304, 728422, 1073464, 1456844, 2549477, 2913688, 5098954, 10197908, 20395816]

約数ペア:

[(1, 20395816), (2, 10197908), (4, 5098954), (7, 2913688), (8, 2549477), (14, 1456844), (19, 1073464), (28, 728422), (29, 703304), (38, 536732), (56, 364211), (58, 351652), (76, 268366), (116, 175826), (133, 153352), (152, 134183), (203, 100472), (232, 87913), (266, 76676), (406, 50236), (532, 38338), (551, 37016), (661, 30856), (812, 25118), (1064, 19169), (1102, 18508), (1322, 15428), (1624, 12559), (2204, 9254), (2644, 7714), (3857, 5288), (4408, 4627)]