21704416

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1$

素因数の和:355

約数の個数: 48

約数和(自身を含む): 44579808

約数和(自身を除く): 22875392

約数列:

[1, 2, 4, 8, 16, 32, 41, 71, 82, 142, 164, 233, 284, 328, 466, 568, 656, 932, 1136, 1312, 1864, 2272, 2911, 3728, 5822, 7456, 9553, 11644, 16543, 19106, 23288, 33086, 38212, 46576, 66172, 76424, 93152, 132344, 152848, 264688, 305696, 529376, 678263, 1356526, 2713052, 5426104, 10852208, 21704416]

約数ペア:

[(1, 21704416), (2, 10852208), (4, 5426104), (8, 2713052), (16, 1356526), (32, 678263), (41, 529376), (71, 305696), (82, 264688), (142, 152848), (164, 132344), (233, 93152), (284, 76424), (328, 66172), (466, 46576), (568, 38212), (656, 33086), (932, 23288), (1136, 19106), (1312, 16543), (1864, 11644), (2272, 9553), (2911, 7456), (3728, 5822)]