1991208494

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{647}}^1\times {\mathrm{139891}}^1$

素因数の和:140551

約数の個数: 16

約数和(自身を含む): 3263400576

約数和(自身を除く): 1272192082

約数列:

[1, 2, 11, 22, 647, 1294, 7117, 14234, 139891, 279782, 1538801, 3077602, 90509477, 181018954, 995604247, 1991208494]

約数ペア:

[(1, 1991208494), (2, 995604247), (11, 181018954), (22, 90509477), (647, 3077602), (1294, 1538801), (7117, 279782), (14234, 139891)]