21223568

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32353}}^1$

素因数の和:32402

約数の個数: 20

約数和(自身を含む): 42124908

約数和(自身を除く): 20901340

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32353, 64706, 129412, 258824, 517648, 1326473, 2652946, 5305892, 10611784, 21223568]

約数ペア:

[(1, 21223568), (2, 10611784), (4, 5305892), (8, 2652946), (16, 1326473), (41, 517648), (82, 258824), (164, 129412), (328, 64706), (656, 32353)]