16681379

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:179

約数の個数: 32

約数和(自身を含む): 20901888

約数和(自身を除く): 4220509

約数列:

[1, 11, 13, 31, 53, 71, 143, 341, 403, 583, 689, 781, 923, 1643, 2201, 3763, 4433, 7579, 10153, 18073, 21359, 24211, 28613, 41393, 48919, 116653, 234949, 314743, 538109, 1283183, 1516489, 16681379]

約数ペア:

[(1, 16681379), (11, 1516489), (13, 1283183), (31, 538109), (53, 314743), (71, 234949), (143, 116653), (341, 48919), (403, 41393), (583, 28613), (689, 24211), (781, 21359), (923, 18073), (1643, 10153), (2201, 7579), (3763, 4433)]