28156401

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1109}}^1$

素因数の和:1166

約数の個数: 48

約数和(自身を含む): 51717120

約数和(自身を除く): 23560719

約数列:

[1, 3, 7, 9, 13, 21, 31, 39, 63, 91, 93, 117, 217, 273, 279, 403, 651, 819, 1109, 1209, 1953, 2821, 3327, 3627, 7763, 8463, 9981, 14417, 23289, 25389, 34379, 43251, 69867, 100919, 103137, 129753, 240653, 302757, 309411, 446927, 721959, 908271, 1340781, 2165877, 3128489, 4022343, 9385467, 28156401]

約数ペア:

[(1, 28156401), (3, 9385467), (7, 4022343), (9, 3128489), (13, 2165877), (21, 1340781), (31, 908271), (39, 721959), (63, 446927), (91, 309411), (93, 302757), (117, 240653), (217, 129753), (273, 103137), (279, 100919), (403, 69867), (651, 43251), (819, 34379), (1109, 25389), (1209, 23289), (1953, 14417), (2821, 9981), (3327, 8463), (3627, 7763)]