21558548

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{2707}}^1$

素因数の和:2903

約数の個数: 24

約数和(自身を含む): 41399904

約数和(自身を除く): 19841356

約数列:

[1, 2, 4, 11, 22, 44, 181, 362, 724, 1991, 2707, 3982, 5414, 7964, 10828, 29777, 59554, 119108, 489967, 979934, 1959868, 5389637, 10779274, 21558548]

約数ペア:

[(1, 21558548), (2, 10779274), (4, 5389637), (11, 1959868), (22, 979934), (44, 489967), (181, 119108), (362, 59554), (724, 29777), (1991, 10828), (2707, 7964), (3982, 5414)]