20816172

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2341}}^1$

素因数の和:2383

約数の個数: 72

約数和(自身を含む): 59674160

約数和(自身を除く): 38857988

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 52, 57, 76, 78, 114, 117, 156, 171, 228, 234, 247, 342, 468, 494, 684, 741, 988, 1482, 2223, 2341, 2964, 4446, 4682, 7023, 8892, 9364, 14046, 21069, 28092, 30433, 42138, 44479, 60866, 84276, 88958, 91299, 121732, 133437, 177916, 182598, 266874, 273897, 365196, 400311, 533748, 547794, 578227, 800622, 1095588, 1156454, 1601244, 1734681, 2312908, 3469362, 5204043, 6938724, 10408086, 20816172]

約数ペア:

[(1, 20816172), (2, 10408086), (3, 6938724), (4, 5204043), (6, 3469362), (9, 2312908), (12, 1734681), (13, 1601244), (18, 1156454), (19, 1095588), (26, 800622), (36, 578227), (38, 547794), (39, 533748), (52, 400311), (57, 365196), (76, 273897), (78, 266874), (114, 182598), (117, 177916), (156, 133437), (171, 121732), (228, 91299), (234, 88958), (247, 84276), (342, 60866), (468, 44479), (494, 42138), (684, 30433), (741, 28092), (988, 21069), (1482, 14046), (2223, 9364), (2341, 8892), (2964, 7023), (4446, 4682)]