20608911

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:213

約数の個数: 40

約数和(自身を含む): 32348624

約数和(自身を除く): 11739713

約数列:

[1, 3, 9, 27, 43, 61, 81, 97, 129, 183, 291, 387, 549, 873, 1161, 1647, 2619, 2623, 3483, 4171, 4941, 5917, 7857, 7869, 12513, 17751, 23607, 37539, 53253, 70821, 112617, 159759, 212463, 254431, 337851, 479277, 763293, 2289879, 6869637, 20608911]

約数ペア:

[(1, 20608911), (3, 6869637), (9, 2289879), (27, 763293), (43, 479277), (61, 337851), (81, 254431), (97, 212463), (129, 159759), (183, 112617), (291, 70821), (387, 53253), (549, 37539), (873, 23607), (1161, 17751), (1647, 12513), (2619, 7869), (2623, 7857), (3483, 5917), (4171, 4941)]