21073311

素因数分解:

$3^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2593}}^1$

素因数の和:2652

約数の個数: 32

約数和(自身を含む): 36523520

約数和(自身を除く): 15450209

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 129, 189, 301, 387, 903, 1161, 2593, 2709, 7779, 8127, 18151, 23337, 54453, 70011, 111499, 163359, 334497, 490077, 780493, 1003491, 2341479, 3010473, 7024437, 21073311]

約数ペア:

[(1, 21073311), (3, 7024437), (7, 3010473), (9, 2341479), (21, 1003491), (27, 780493), (43, 490077), (63, 334497), (129, 163359), (189, 111499), (301, 70011), (387, 54453), (903, 23337), (1161, 18151), (2593, 8127), (2709, 7779)]