21408618

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{311}}^1$

素因数の和:483

約数の個数: 64

約数和(自身を含む): 53913600

約数和(自身を除く): 32504982

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 149, 154, 231, 298, 311, 447, 462, 622, 894, 933, 1043, 1639, 1866, 2086, 2177, 3129, 3278, 3421, 4354, 4917, 6258, 6531, 6842, 9834, 10263, 11473, 13062, 20526, 22946, 23947, 34419, 46339, 47894, 68838, 71841, 92678, 139017, 143682, 278034, 324373, 509729, 648746, 973119, 1019458, 1529187, 1946238, 3058374, 3568103, 7136206, 10704309, 21408618]

約数ペア:

[(1, 21408618), (2, 10704309), (3, 7136206), (6, 3568103), (7, 3058374), (11, 1946238), (14, 1529187), (21, 1019458), (22, 973119), (33, 648746), (42, 509729), (66, 324373), (77, 278034), (149, 143682), (154, 139017), (231, 92678), (298, 71841), (311, 68838), (447, 47894), (462, 46339), (622, 34419), (894, 23947), (933, 22946), (1043, 20526), (1639, 13062), (1866, 11473), (2086, 10263), (2177, 9834), (3129, 6842), (3278, 6531), (3421, 6258), (4354, 4917)]