21306224

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32479}}^1$

素因数の和:32528

約数の個数: 20

約数和(自身を含む): 42288960

約数和(自身を除く): 20982736

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32479, 64958, 129916, 259832, 519664, 1331639, 2663278, 5326556, 10653112, 21306224]

約数ペア:

[(1, 21306224), (2, 10653112), (4, 5326556), (8, 2663278), (16, 1331639), (41, 519664), (82, 259832), (164, 129916), (328, 64958), (656, 32479)]