81404960

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5591}}^1$

素因数の和:5626

約数の個数: 96

約数和(自身を含む): 236742912

約数和(自身を除く): 155337952

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 364, 416, 455, 520, 560, 728, 910, 1040, 1120, 1456, 1820, 2080, 2912, 3640, 5591, 7280, 11182, 14560, 22364, 27955, 39137, 44728, 55910, 72683, 78274, 89456, 111820, 145366, 156548, 178912, 195685, 223640, 290732, 313096, 363415, 391370, 447280, 508781, 581464, 626192, 726830, 782740, 894560, 1017562, 1162928, 1252384, 1453660, 1565480, 2035124, 2325856, 2543905, 2907320, 3130960, 4070248, 5087810, 5814640, 6261920, 8140496, 10175620, 11629280, 16280992, 20351240, 40702480, 81404960]

約数ペア:

[(1, 81404960), (2, 40702480), (4, 20351240), (5, 16280992), (7, 11629280), (8, 10175620), (10, 8140496), (13, 6261920), (14, 5814640), (16, 5087810), (20, 4070248), (26, 3130960), (28, 2907320), (32, 2543905), (35, 2325856), (40, 2035124), (52, 1565480), (56, 1453660), (65, 1252384), (70, 1162928), (80, 1017562), (91, 894560), (104, 782740), (112, 726830), (130, 626192), (140, 581464), (160, 508781), (182, 447280), (208, 391370), (224, 363415), (260, 313096), (280, 290732), (364, 223640), (416, 195685), (455, 178912), (520, 156548), (560, 145366), (728, 111820), (910, 89456), (1040, 78274), (1120, 72683), (1456, 55910), (1820, 44728), (2080, 39137), (2912, 27955), (3640, 22364), (5591, 14560), (7280, 11182)]