81206460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4651}}^1$

素因数の和:4763

約数の個数: 72

約数和(自身を含む): 248919216

約数和(自身を除く): 167712756

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 97, 180, 194, 291, 388, 485, 582, 873, 970, 1164, 1455, 1746, 1940, 2910, 3492, 4365, 4651, 5820, 8730, 9302, 13953, 17460, 18604, 23255, 27906, 41859, 46510, 55812, 69765, 83718, 93020, 139530, 167436, 209295, 279060, 418590, 451147, 837180, 902294, 1353441, 1804588, 2255735, 2706882, 4060323, 4511470, 5413764, 6767205, 8120646, 9022940, 13534410, 16241292, 20301615, 27068820, 40603230, 81206460]

約数ペア:

[(1, 81206460), (2, 40603230), (3, 27068820), (4, 20301615), (5, 16241292), (6, 13534410), (9, 9022940), (10, 8120646), (12, 6767205), (15, 5413764), (18, 4511470), (20, 4060323), (30, 2706882), (36, 2255735), (45, 1804588), (60, 1353441), (90, 902294), (97, 837180), (180, 451147), (194, 418590), (291, 279060), (388, 209295), (485, 167436), (582, 139530), (873, 93020), (970, 83718), (1164, 69765), (1455, 55812), (1746, 46510), (1940, 41859), (2910, 27906), (3492, 23255), (4365, 18604), (4651, 17460), (5820, 13953), (8730, 9302)]