21250042

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{6949}}^1$

素因数の和:7101

約数の個数: 16

約数和(自身を含む): 35028000

約数和(自身を除く): 13777958

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 6949, 13898, 76439, 152878, 965911, 1931822, 10625021, 21250042]

約数ペア:

[(1, 21250042), (2, 10625021), (11, 1931822), (22, 965911), (139, 152878), (278, 76439), (1529, 13898), (3058, 6949)]