18720234

素因数分解:

$2^1\times 3^5\times {\mathrm{13}}^1\times {\mathrm{2963}}^1$

素因数の和:2993

約数の個数: 48

約数和(自身を含む): 45313632

約数和(自身を除く): 26593398

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 81, 117, 162, 234, 243, 351, 486, 702, 1053, 2106, 2963, 3159, 5926, 6318, 8889, 17778, 26667, 38519, 53334, 77038, 80001, 115557, 160002, 231114, 240003, 346671, 480006, 693342, 720009, 1040013, 1440018, 2080026, 3120039, 6240078, 9360117, 18720234]

約数ペア:

[(1, 18720234), (2, 9360117), (3, 6240078), (6, 3120039), (9, 2080026), (13, 1440018), (18, 1040013), (26, 720009), (27, 693342), (39, 480006), (54, 346671), (78, 240003), (81, 231114), (117, 160002), (162, 115557), (234, 80001), (243, 77038), (351, 53334), (486, 38519), (702, 26667), (1053, 17778), (2106, 8889), (2963, 6318), (3159, 5926)]