20915577

素因数分解:

$3^4\times {\mathrm{149}}^1\times {\mathrm{1733}}^1$

素因数の和:1894

約数の個数: 20

約数和(自身を含む): 31472100

約数和(自身を除く): 10556523

約数列:

[1, 3, 9, 27, 81, 149, 447, 1341, 1733, 4023, 5199, 12069, 15597, 46791, 140373, 258217, 774651, 2323953, 6971859, 20915577]

約数ペア:

[(1, 20915577), (3, 6971859), (9, 2323953), (27, 774651), (81, 258217), (149, 140373), (447, 46791), (1341, 15597), (1733, 12069), (4023, 5199)]