81405810

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{100501}}^1$

素因数の和:100520

約数の個数: 40

約数和(自身を含む): 218893356

約数和(自身を除く): 137487546

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 100501, 201002, 301503, 502505, 603006, 904509, 1005010, 1507515, 1809018, 2713527, 3015030, 4522545, 5427054, 8140581, 9045090, 13567635, 16281162, 27135270, 40702905, 81405810]

約数ペア:

[(1, 81405810), (2, 40702905), (3, 27135270), (5, 16281162), (6, 13567635), (9, 9045090), (10, 8140581), (15, 5427054), (18, 4522545), (27, 3015030), (30, 2713527), (45, 1809018), (54, 1507515), (81, 1005010), (90, 904509), (135, 603006), (162, 502505), (270, 301503), (405, 201002), (810, 100501)]