18656001

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2531}}^1$

素因数の和:2563

約数の個数: 40

約数和(自身を含む): 34313664

約数和(自身を除く): 15657663

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 273, 351, 567, 819, 1053, 2457, 2531, 7371, 7593, 17717, 22779, 32903, 53151, 68337, 98709, 159453, 205011, 230321, 296127, 478359, 690963, 888381, 1435077, 2072889, 2665143, 6218667, 18656001]

約数ペア:

[(1, 18656001), (3, 6218667), (7, 2665143), (9, 2072889), (13, 1435077), (21, 888381), (27, 690963), (39, 478359), (63, 296127), (81, 230321), (91, 205011), (117, 159453), (189, 98709), (273, 68337), (351, 53151), (567, 32903), (819, 22779), (1053, 17717), (2457, 7593), (2531, 7371)]