21085808

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32143}}^1$

素因数の和:32192

約数の個数: 20

約数和(自身を含む): 41851488

約数和(自身を除く): 20765680

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32143, 64286, 128572, 257144, 514288, 1317863, 2635726, 5271452, 10542904, 21085808]

約数ペア:

[(1, 21085808), (2, 10542904), (4, 5271452), (8, 2635726), (16, 1317863), (41, 514288), (82, 257144), (164, 128572), (328, 64286), (656, 32143)]