21305086

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{6967}}^1$

素因数の和:7119

約数の個数: 16

約数和(自身を含む): 35118720

約数和(自身を除く): 13813634

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 6967, 13934, 76637, 153274, 968413, 1936826, 10652543, 21305086]

約数ペア:

[(1, 21305086), (2, 10652543), (11, 1936826), (22, 968413), (139, 153274), (278, 76637), (1529, 13934), (3058, 6967)]