20119905

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{211}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 37966656

約数和(自身を除く): 17846751

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 163, 195, 211, 489, 585, 633, 815, 1055, 1467, 1899, 2119, 2445, 2743, 3165, 6357, 7335, 8229, 9495, 10595, 13715, 19071, 24687, 31785, 34393, 41145, 95355, 103179, 123435, 171965, 309537, 447109, 515895, 1341327, 1547685, 2235545, 4023981, 6706635, 20119905]

約数ペア:

[(1, 20119905), (3, 6706635), (5, 4023981), (9, 2235545), (13, 1547685), (15, 1341327), (39, 515895), (45, 447109), (65, 309537), (117, 171965), (163, 123435), (195, 103179), (211, 95355), (489, 41145), (585, 34393), (633, 31785), (815, 24687), (1055, 19071), (1467, 13715), (1899, 10595), (2119, 9495), (2445, 8229), (2743, 7335), (3165, 6357)]