19657818

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{251}}^1$

素因数の和:507

約数の個数: 48

約数和(自身を含む): 45208800

約数和(自身を除く): 25550982

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 229, 251, 342, 458, 502, 687, 753, 1374, 1506, 2061, 2259, 4122, 4351, 4518, 4769, 8702, 9538, 13053, 14307, 26106, 28614, 39159, 42921, 57479, 78318, 85842, 114958, 172437, 344874, 517311, 1034622, 1092101, 2184202, 3276303, 6552606, 9828909, 19657818]

約数ペア:

[(1, 19657818), (2, 9828909), (3, 6552606), (6, 3276303), (9, 2184202), (18, 1092101), (19, 1034622), (38, 517311), (57, 344874), (114, 172437), (171, 114958), (229, 85842), (251, 78318), (342, 57479), (458, 42921), (502, 39159), (687, 28614), (753, 26106), (1374, 14307), (1506, 13053), (2061, 9538), (2259, 8702), (4122, 4769), (4351, 4518)]