20910981

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{76597}}^1$

素因数の和:76620

約数の個数: 16

約数和(自身を含む): 34315904

約数和(自身を除く): 13404923

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 76597, 229791, 536179, 995761, 1608537, 2987283, 6970327, 20910981]

約数ペア:

[(1, 20910981), (3, 6970327), (7, 2987283), (13, 1608537), (21, 995761), (39, 536179), (91, 229791), (273, 76597)]