218664901

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 302400000

約数和(自身を除く): 83735099

約数列:

[1, 7, 13, 19, 29, 49, 89, 91, 133, 203, 247, 343, 377, 551, 623, 637, 931, 1157, 1421, 1691, 1729, 2581, 2639, 3857, 4361, 4459, 6517, 7163, 8099, 9947, 11837, 12103, 18067, 18473, 21983, 26999, 30527, 33553, 49039, 50141, 56693, 82859, 84721, 126469, 129311, 153881, 188993, 234871, 343273, 350987, 396851, 580013, 637507, 885283, 1077167, 1644097, 2402911, 2456909, 4462549, 7540169, 11508679, 16820377, 31237843, 218664901]

約数ペア:

[(1, 218664901), (7, 31237843), (13, 16820377), (19, 11508679), (29, 7540169), (49, 4462549), (89, 2456909), (91, 2402911), (133, 1644097), (203, 1077167), (247, 885283), (343, 637507), (377, 580013), (551, 396851), (623, 350987), (637, 343273), (931, 234871), (1157, 188993), (1421, 153881), (1691, 129311), (1729, 126469), (2581, 84721), (2639, 82859), (3857, 56693), (4361, 50141), (4459, 49039), (6517, 33553), (7163, 30527), (8099, 26999), (9947, 21983), (11837, 18473), (12103, 18067)]