20975598

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{349}}^1$

素因数の和:423

約数の個数: 80

約数和(自身を含む): 54885600

約数和(自身を除く): 33910002

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 53, 54, 63, 81, 106, 126, 159, 162, 189, 318, 349, 371, 378, 477, 567, 698, 742, 954, 1047, 1113, 1134, 1431, 2094, 2226, 2443, 2862, 3141, 3339, 4293, 4886, 6282, 6678, 7329, 8586, 9423, 10017, 14658, 18497, 18846, 20034, 21987, 28269, 30051, 36994, 43974, 55491, 56538, 60102, 65961, 110982, 129479, 131922, 166473, 197883, 258958, 332946, 388437, 395766, 499419, 776874, 998838, 1165311, 1498257, 2330622, 2996514, 3495933, 6991866, 10487799, 20975598]

約数ペア:

[(1, 20975598), (2, 10487799), (3, 6991866), (6, 3495933), (7, 2996514), (9, 2330622), (14, 1498257), (18, 1165311), (21, 998838), (27, 776874), (42, 499419), (53, 395766), (54, 388437), (63, 332946), (81, 258958), (106, 197883), (126, 166473), (159, 131922), (162, 129479), (189, 110982), (318, 65961), (349, 60102), (371, 56538), (378, 55491), (477, 43974), (567, 36994), (698, 30051), (742, 28269), (954, 21987), (1047, 20034), (1113, 18846), (1134, 18497), (1431, 14658), (2094, 10017), (2226, 9423), (2443, 8586), (2862, 7329), (3141, 6678), (3339, 6282), (4293, 4886)]