20806094421

素因数分解:

$3^2\times 7^1\times {\mathrm{17977}}^1\times {\mathrm{18371}}^1$

素因数の和:36361

約数の個数: 24

約数和(自身を含む): 34350348864

約数和(自身を除く): 13544254443

約数列:

[1, 3, 7, 9, 21, 63, 17977, 18371, 53931, 55113, 125839, 128597, 161793, 165339, 377517, 385791, 1132551, 1157373, 330255467, 990766401, 2311788269, 2972299203, 6935364807, 20806094421]

約数ペア:

[(1, 20806094421), (3, 6935364807), (7, 2972299203), (9, 2311788269), (21, 990766401), (63, 330255467), (17977, 1157373), (18371, 1132551), (53931, 385791), (55113, 377517), (125839, 165339), (128597, 161793)]