21000657706

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1129}}^1\times {\mathrm{69929}}^1$

素因数の和:71086

約数の個数: 32

約数和(自身を含む): 37930032000

約数和(自身を除く): 16929374294

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 1129, 2258, 7903, 15806, 21451, 42902, 69929, 139858, 150157, 300314, 489503, 979006, 1328651, 2657302, 9300557, 18601114, 78949841, 157899682, 552648887, 1105297774, 1500046979, 3000093958, 10500328853, 21000657706]

約数ペア:

[(1, 21000657706), (2, 10500328853), (7, 3000093958), (14, 1500046979), (19, 1105297774), (38, 552648887), (133, 157899682), (266, 78949841), (1129, 18601114), (2258, 9300557), (7903, 2657302), (15806, 1328651), (21451, 979006), (42902, 489503), (69929, 300314), (139858, 150157)]