20651868

素因数分解:

$2^2\times 3^3\times {\mathrm{43}}^1\times {\mathrm{4447}}^1$

素因数の和:4503

約数の個数: 48

約数和(自身を含む): 54799360

約数和(自身を除く): 34147492

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 43, 54, 86, 108, 129, 172, 258, 387, 516, 774, 1161, 1548, 2322, 4447, 4644, 8894, 13341, 17788, 26682, 40023, 53364, 80046, 120069, 160092, 191221, 240138, 382442, 480276, 573663, 764884, 1147326, 1720989, 2294652, 3441978, 5162967, 6883956, 10325934, 20651868]

約数ペア:

[(1, 20651868), (2, 10325934), (3, 6883956), (4, 5162967), (6, 3441978), (9, 2294652), (12, 1720989), (18, 1147326), (27, 764884), (36, 573663), (43, 480276), (54, 382442), (86, 240138), (108, 191221), (129, 160092), (172, 120069), (258, 80046), (387, 53364), (516, 40023), (774, 26682), (1161, 17788), (1548, 13341), (2322, 8894), (4447, 4644)]