18078021

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 30466800

約数和(自身を除く): 12388779

約数列:

[1, 3, 9, 13, 17, 39, 51, 61, 117, 149, 153, 183, 221, 447, 549, 663, 793, 1037, 1341, 1937, 1989, 2379, 2533, 3111, 5811, 7137, 7599, 9089, 9333, 13481, 17433, 22797, 27267, 32929, 40443, 81801, 98787, 118157, 121329, 154513, 296361, 354471, 463539, 1063413, 1390617, 2008669, 6026007, 18078021]

約数ペア:

[(1, 18078021), (3, 6026007), (9, 2008669), (13, 1390617), (17, 1063413), (39, 463539), (51, 354471), (61, 296361), (117, 154513), (149, 121329), (153, 118157), (183, 98787), (221, 81801), (447, 40443), (549, 32929), (663, 27267), (793, 22797), (1037, 17433), (1341, 13481), (1937, 9333), (1989, 9089), (2379, 7599), (2533, 7137), (3111, 5811)]