81481545

素因数分解:

$3^5\times 5^1\times {\mathrm{199}}^1\times {\mathrm{337}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 147638400

約数和(自身を除く): 66156855

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 199, 243, 337, 405, 597, 995, 1011, 1215, 1685, 1791, 2985, 3033, 5055, 5373, 8955, 9099, 15165, 16119, 26865, 27297, 45495, 48357, 67063, 80595, 81891, 136485, 201189, 241785, 335315, 409455, 603567, 1005945, 1810701, 3017835, 5432103, 9053505, 16296309, 27160515, 81481545]

約数ペア:

[(1, 81481545), (3, 27160515), (5, 16296309), (9, 9053505), (15, 5432103), (27, 3017835), (45, 1810701), (81, 1005945), (135, 603567), (199, 409455), (243, 335315), (337, 241785), (405, 201189), (597, 136485), (995, 81891), (1011, 80595), (1215, 67063), (1685, 48357), (1791, 45495), (2985, 27297), (3033, 26865), (5055, 16119), (5373, 15165), (8955, 9099)]