21880593

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 38054016

約数和(自身を除く): 16173423

約数列:

[1, 3, 7, 9, 21, 41, 43, 63, 123, 129, 197, 287, 301, 369, 387, 591, 861, 903, 1379, 1763, 1773, 2583, 2709, 4137, 5289, 8077, 8471, 12341, 12411, 15867, 24231, 25413, 37023, 56539, 59297, 72693, 76239, 111069, 169617, 177891, 347311, 508851, 533673, 1041933, 2431177, 3125799, 7293531, 21880593]

約数ペア:

[(1, 21880593), (3, 7293531), (7, 3125799), (9, 2431177), (21, 1041933), (41, 533673), (43, 508851), (63, 347311), (123, 177891), (129, 169617), (197, 111069), (287, 76239), (301, 72693), (369, 59297), (387, 56539), (591, 37023), (861, 25413), (903, 24231), (1379, 15867), (1763, 12411), (1773, 12341), (2583, 8471), (2709, 8077), (4137, 5289)]