20375894

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 41513472

約数和(自身を除く): 21137578

約数列:

[1, 2, 7, 11, 14, 17, 22, 34, 43, 77, 86, 119, 154, 181, 187, 238, 301, 362, 374, 473, 602, 731, 946, 1267, 1309, 1462, 1991, 2534, 2618, 3077, 3311, 3982, 5117, 6154, 6622, 7783, 8041, 10234, 13937, 15566, 16082, 21539, 27874, 33847, 43078, 54481, 56287, 67694, 85613, 108962, 112574, 132311, 171226, 236929, 264622, 473858, 599291, 926177, 1198582, 1455421, 1852354, 2910842, 10187947, 20375894]

約数ペア:

[(1, 20375894), (2, 10187947), (7, 2910842), (11, 1852354), (14, 1455421), (17, 1198582), (22, 926177), (34, 599291), (43, 473858), (77, 264622), (86, 236929), (119, 171226), (154, 132311), (181, 112574), (187, 108962), (238, 85613), (301, 67694), (362, 56287), (374, 54481), (473, 43078), (602, 33847), (731, 27874), (946, 21539), (1267, 16082), (1309, 15566), (1462, 13937), (1991, 10234), (2534, 8041), (2618, 7783), (3077, 6622), (3311, 6154), (3982, 5117)]