20013795

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 36908352

約数和(自身を除く): 16894557

約数列:

[1, 3, 5, 9, 15, 23, 45, 61, 69, 115, 183, 207, 305, 317, 345, 549, 915, 951, 1035, 1403, 1585, 2745, 2853, 4209, 4755, 7015, 7291, 12627, 14265, 19337, 21045, 21873, 36455, 58011, 63135, 65619, 96685, 109365, 174033, 290055, 328095, 444751, 870165, 1334253, 2223755, 4002759, 6671265, 20013795]

約数ペア:

[(1, 20013795), (3, 6671265), (5, 4002759), (9, 2223755), (15, 1334253), (23, 870165), (45, 444751), (61, 328095), (69, 290055), (115, 174033), (183, 109365), (207, 96685), (305, 65619), (317, 63135), (345, 58011), (549, 36455), (915, 21873), (951, 21045), (1035, 19337), (1403, 14265), (1585, 12627), (2745, 7291), (2853, 7015), (4209, 4755)]