70820487

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{51431}}^1$

素因数の和:51460

約数の個数: 20

約数和(自身を含む): 112018896

約数和(自身を除く): 41198409

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 51431, 154293, 462879, 874327, 1388637, 2622981, 4165911, 7868943, 23606829, 70820487]

約数ペア:

[(1, 70820487), (3, 23606829), (9, 7868943), (17, 4165911), (27, 2622981), (51, 1388637), (81, 874327), (153, 462879), (459, 154293), (1377, 51431)]