81280017

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11027}}^1$

素因数の和:11059

約数の個数: 40

約数和(自身を含む): 149451456

約数和(自身を除く): 68171439

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 273, 351, 567, 819, 1053, 2457, 7371, 11027, 33081, 77189, 99243, 143351, 231567, 297729, 430053, 694701, 893187, 1003457, 1290159, 2084103, 3010371, 3870477, 6252309, 9031113, 11611431, 27093339, 81280017]

約数ペア:

[(1, 81280017), (3, 27093339), (7, 11611431), (9, 9031113), (13, 6252309), (21, 3870477), (27, 3010371), (39, 2084103), (63, 1290159), (81, 1003457), (91, 893187), (117, 694701), (189, 430053), (273, 297729), (351, 231567), (567, 143351), (819, 99243), (1053, 77189), (2457, 33081), (7371, 11027)]