201717621

素因数分解:

$3^4\times 7^1\times {\mathrm{355763}}^1$

素因数の和:355782

約数の個数: 20

約数和(自身を含む): 344379552

約数和(自身を除く): 142661931

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 355763, 1067289, 2490341, 3201867, 7471023, 9605601, 22413069, 28816803, 67239207, 201717621]

約数ペア:

[(1, 201717621), (3, 67239207), (7, 28816803), (9, 22413069), (21, 9605601), (27, 7471023), (63, 3201867), (81, 2490341), (189, 1067289), (567, 355763)]