81368980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{52837}}^1$

素因数の和:52864

約数の個数: 48

約数和(自身を含む): 213042816

約数和(自身を除く): 131673836

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 52837, 105674, 211348, 264185, 369859, 528370, 581207, 739718, 1056740, 1162414, 1479436, 1849295, 2324828, 2906035, 3698590, 4068449, 5812070, 7397180, 8136898, 11624140, 16273796, 20342245, 40684490, 81368980]

約数ペア:

[(1, 81368980), (2, 40684490), (4, 20342245), (5, 16273796), (7, 11624140), (10, 8136898), (11, 7397180), (14, 5812070), (20, 4068449), (22, 3698590), (28, 2906035), (35, 2324828), (44, 1849295), (55, 1479436), (70, 1162414), (77, 1056740), (110, 739718), (140, 581207), (154, 528370), (220, 369859), (308, 264185), (385, 211348), (770, 105674), (1540, 52837)]