21395836

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{69467}}^1$

素因数の和:69489

約数の個数: 24

約数和(自身を含む): 46682496

約数和(自身を除く): 25286660

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 69467, 138934, 277868, 486269, 764137, 972538, 1528274, 1945076, 3056548, 5348959, 10697918, 21395836]

約数ペア:

[(1, 21395836), (2, 10697918), (4, 5348959), (7, 3056548), (11, 1945076), (14, 1528274), (22, 972538), (28, 764137), (44, 486269), (77, 277868), (154, 138934), (308, 69467)]