21037863

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1493}}^1$

素因数の和:1575

約数の個数: 32

約数和(自身を含む): 35569152

約数和(自身を除く): 14531289

約数列:

[1, 3, 7, 11, 21, 33, 61, 77, 183, 231, 427, 671, 1281, 1493, 2013, 4479, 4697, 10451, 14091, 16423, 31353, 49269, 91073, 114961, 273219, 344883, 637511, 1001803, 1912533, 3005409, 7012621, 21037863]

約数ペア:

[(1, 21037863), (3, 7012621), (7, 3005409), (11, 1912533), (21, 1001803), (33, 637511), (61, 344883), (77, 273219), (183, 114961), (231, 91073), (427, 49269), (671, 31353), (1281, 16423), (1493, 14091), (2013, 10451), (4479, 4697)]