81080720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2161}}^1$

素因数の和:2248

約数の個数: 80

約数和(自身を含む): 218759808

約数和(自身を除く): 137679088

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 67, 70, 80, 112, 134, 140, 268, 280, 335, 469, 536, 560, 670, 938, 1072, 1340, 1876, 2161, 2345, 2680, 3752, 4322, 4690, 5360, 7504, 8644, 9380, 10805, 15127, 17288, 18760, 21610, 30254, 34576, 37520, 43220, 60508, 75635, 86440, 121016, 144787, 151270, 172880, 242032, 289574, 302540, 579148, 605080, 723935, 1013509, 1158296, 1210160, 1447870, 2027018, 2316592, 2895740, 4054036, 5067545, 5791480, 8108072, 10135090, 11582960, 16216144, 20270180, 40540360, 81080720]

約数ペア:

[(1, 81080720), (2, 40540360), (4, 20270180), (5, 16216144), (7, 11582960), (8, 10135090), (10, 8108072), (14, 5791480), (16, 5067545), (20, 4054036), (28, 2895740), (35, 2316592), (40, 2027018), (56, 1447870), (67, 1210160), (70, 1158296), (80, 1013509), (112, 723935), (134, 605080), (140, 579148), (268, 302540), (280, 289574), (335, 242032), (469, 172880), (536, 151270), (560, 144787), (670, 121016), (938, 86440), (1072, 75635), (1340, 60508), (1876, 43220), (2161, 37520), (2345, 34576), (2680, 30254), (3752, 21610), (4322, 18760), (4690, 17288), (5360, 15127), (7504, 10805), (8644, 9380)]