21405906

素因数分解:

$2^1\times 3^2\times {\mathrm{37}}^1\times {\mathrm{32141}}^1$

素因数の和:32186

約数の個数: 24

約数和(自身を含む): 47634444

約数和(自身を除く): 26228538

約数列:

[1, 2, 3, 6, 9, 18, 37, 74, 111, 222, 333, 666, 32141, 64282, 96423, 192846, 289269, 578538, 1189217, 2378434, 3567651, 7135302, 10702953, 21405906]

約数ペア:

[(1, 21405906), (2, 10702953), (3, 7135302), (6, 3567651), (9, 2378434), (18, 1189217), (37, 578538), (74, 289269), (111, 192846), (222, 96423), (333, 64282), (666, 32141)]