28327887

素因数分解:

$3^4\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1063}}^1$

素因数の和:1129

約数の個数: 40

約数和(自身を含む): 49437696

約数和(自身を除く): 21109809

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 81, 141, 189, 329, 423, 567, 987, 1063, 1269, 2961, 3189, 3807, 7441, 8883, 9567, 22323, 26649, 28701, 49961, 66969, 86103, 149883, 200907, 349727, 449649, 602721, 1049181, 1348947, 3147543, 4046841, 9442629, 28327887]

約数ペア:

[(1, 28327887), (3, 9442629), (7, 4046841), (9, 3147543), (21, 1348947), (27, 1049181), (47, 602721), (63, 449649), (81, 349727), (141, 200907), (189, 149883), (329, 86103), (423, 66969), (567, 49961), (987, 28701), (1063, 26649), (1269, 22323), (2961, 9567), (3189, 8883), (3807, 7441)]