21145504

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:349

約数の個数: 48

約数和(自身を含む): 43436736

約数和(自身を除く): 22291232

約数列:

[1, 2, 4, 8, 16, 32, 41, 71, 82, 142, 164, 227, 284, 328, 454, 568, 656, 908, 1136, 1312, 1816, 2272, 2911, 3632, 5822, 7264, 9307, 11644, 16117, 18614, 23288, 32234, 37228, 46576, 64468, 74456, 93152, 128936, 148912, 257872, 297824, 515744, 660797, 1321594, 2643188, 5286376, 10572752, 21145504]

約数ペア:

[(1, 21145504), (2, 10572752), (4, 5286376), (8, 2643188), (16, 1321594), (32, 660797), (41, 515744), (71, 297824), (82, 257872), (142, 148912), (164, 128936), (227, 93152), (284, 74456), (328, 64468), (454, 46576), (568, 37228), (656, 32234), (908, 23288), (1136, 18614), (1312, 16117), (1816, 11644), (2272, 9307), (2911, 7264), (3632, 5822)]