20109472

素因数分解:

$2^5\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:301

約数の個数: 48

約数和(自身を含む): 41150592

約数和(自身を除く): 21041120

約数列:

[1, 2, 4, 8, 16, 32, 53, 71, 106, 142, 167, 212, 284, 334, 424, 568, 668, 848, 1136, 1336, 1696, 2272, 2672, 3763, 5344, 7526, 8851, 11857, 15052, 17702, 23714, 30104, 35404, 47428, 60208, 70808, 94856, 120416, 141616, 189712, 283232, 379424, 628421, 1256842, 2513684, 5027368, 10054736, 20109472]

約数ペア:

[(1, 20109472), (2, 10054736), (4, 5027368), (8, 2513684), (16, 1256842), (32, 628421), (53, 379424), (71, 283232), (106, 189712), (142, 141616), (167, 120416), (212, 94856), (284, 70808), (334, 60208), (424, 47428), (568, 35404), (668, 30104), (848, 23714), (1136, 17702), (1336, 15052), (1696, 11857), (2272, 8851), (2672, 7526), (3763, 5344)]