20157564231

素因数分解:

$3^3\times 7^1\times {\mathrm{1997}}^1\times {\mathrm{53407}}^1$

素因数の和:55420

約数の個数: 32

約数和(自身を含む): 34146938880

約数和(自身を除く): 13989374649

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 1997, 5991, 13979, 17973, 41937, 53407, 53919, 125811, 160221, 373849, 377433, 480663, 1121547, 1441989, 3364641, 10093923, 106653779, 319961337, 746576453, 959884011, 2239729359, 2879652033, 6719188077, 20157564231]

約数ペア:

[(1, 20157564231), (3, 6719188077), (7, 2879652033), (9, 2239729359), (21, 959884011), (27, 746576453), (63, 319961337), (189, 106653779), (1997, 10093923), (5991, 3364641), (13979, 1441989), (17973, 1121547), (41937, 480663), (53407, 377433), (53919, 373849), (125811, 160221)]