81155907

素因数分解:

$3^2\times 7^2\times {\mathrm{163}}^1\times {\mathrm{1129}}^1$

素因数の和:1312

約数の個数: 36

約数和(自身を含む): 137322120

約数和(自身を除く): 56166213

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 163, 441, 489, 1129, 1141, 1467, 3387, 3423, 7903, 7987, 10161, 10269, 23709, 23961, 55321, 71127, 71883, 165963, 184027, 497889, 552081, 1288189, 1656243, 3864567, 9017323, 11593701, 27051969, 81155907]

約数ペア:

[(1, 81155907), (3, 27051969), (7, 11593701), (9, 9017323), (21, 3864567), (49, 1656243), (63, 1288189), (147, 552081), (163, 497889), (441, 184027), (489, 165963), (1129, 71883), (1141, 71127), (1467, 55321), (3387, 23961), (3423, 23709), (7903, 10269), (7987, 10161)]