91281920

素因数分解:

$2^9\times 5^1\times {\mathrm{181}}^1\times {\mathrm{197}}^1$

素因数の和:401

約数の個数: 80

約数和(自身を含む): 221188968

約数和(自身を除く): 129907048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 181, 197, 256, 320, 362, 394, 512, 640, 724, 788, 905, 985, 1280, 1448, 1576, 1810, 1970, 2560, 2896, 3152, 3620, 3940, 5792, 6304, 7240, 7880, 11584, 12608, 14480, 15760, 23168, 25216, 28960, 31520, 35657, 46336, 50432, 57920, 63040, 71314, 92672, 100864, 115840, 126080, 142628, 178285, 231680, 252160, 285256, 356570, 463360, 504320, 570512, 713140, 1141024, 1426280, 2282048, 2852560, 4564096, 5705120, 9128192, 11410240, 18256384, 22820480, 45640960, 91281920]

約数ペア:

[(1, 91281920), (2, 45640960), (4, 22820480), (5, 18256384), (8, 11410240), (10, 9128192), (16, 5705120), (20, 4564096), (32, 2852560), (40, 2282048), (64, 1426280), (80, 1141024), (128, 713140), (160, 570512), (181, 504320), (197, 463360), (256, 356570), (320, 285256), (362, 252160), (394, 231680), (512, 178285), (640, 142628), (724, 126080), (788, 115840), (905, 100864), (985, 92672), (1280, 71314), (1448, 63040), (1576, 57920), (1810, 50432), (1970, 46336), (2560, 35657), (2896, 31520), (3152, 28960), (3620, 25216), (3940, 23168), (5792, 15760), (6304, 14480), (7240, 12608), (7880, 11584)]