81090540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{450503}}^1$

素因数の和:450518

約数の個数: 36

約数和(自身を含む): 245975184

約数和(自身を除く): 164884644

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 450503, 901006, 1351509, 1802012, 2252515, 2703018, 4054527, 4505030, 5406036, 6757545, 8109054, 9010060, 13515090, 16218108, 20272635, 27030180, 40545270, 81090540]

約数ペア:

[(1, 81090540), (2, 40545270), (3, 27030180), (4, 20272635), (5, 16218108), (6, 13515090), (9, 9010060), (10, 8109054), (12, 6757545), (15, 5406036), (18, 4505030), (20, 4054527), (30, 2703018), (36, 2252515), (45, 1802012), (60, 1351509), (90, 901006), (180, 450503)]