81991359

素因数分解:

$3^6\times {\mathrm{47}}^1\times {\mathrm{2393}}^1$

素因数の和:2458

約数の個数: 28

約数和(自身を含む): 125598816

約数和(自身を除く): 43607457

約数列:

[1, 3, 9, 27, 47, 81, 141, 243, 423, 729, 1269, 2393, 3807, 7179, 11421, 21537, 34263, 64611, 112471, 193833, 337413, 581499, 1012239, 1744497, 3036717, 9110151, 27330453, 81991359]

約数ペア:

[(1, 81991359), (3, 27330453), (9, 9110151), (27, 3036717), (47, 1744497), (81, 1012239), (141, 581499), (243, 337413), (423, 193833), (729, 112471), (1269, 64611), (2393, 34263), (3807, 21537), (7179, 11421)]