21396069

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{6143}}^1$

素因数の和:6198

約数の個数: 20

約数和(自身を含む): 32710656

約数和(自身を除く): 11314587

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 6143, 18429, 55287, 165861, 264149, 497583, 792447, 2377341, 7132023, 21396069]

約数ペア:

[(1, 21396069), (3, 7132023), (9, 2377341), (27, 792447), (43, 497583), (81, 264149), (129, 165861), (387, 55287), (1161, 18429), (3483, 6143)]