21221108

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{1559}}^1$

素因数の和:1687

約数の個数: 24

約数和(自身を含む): 38525760

約数和(自身を除く): 17304652

約数列:

[1, 2, 4, 41, 82, 83, 164, 166, 332, 1559, 3118, 3403, 6236, 6806, 13612, 63919, 127838, 129397, 255676, 258794, 517588, 5305277, 10610554, 21221108]

約数ペア:

[(1, 21221108), (2, 10610554), (4, 5305277), (41, 517588), (82, 258794), (83, 255676), (164, 129397), (166, 127838), (332, 63919), (1559, 13612), (3118, 6806), (3403, 6236)]