21682449

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{179}}^1\times {\mathrm{313}}^1$

素因数の和:541

約数の個数: 24

約数和(自身を含む): 32329440

約数和(自身を除く): 10646991

約数列:

[1, 3, 9, 43, 129, 179, 313, 387, 537, 939, 1611, 2817, 7697, 13459, 23091, 40377, 56027, 69273, 121131, 168081, 504243, 2409161, 7227483, 21682449]

約数ペア:

[(1, 21682449), (3, 7227483), (9, 2409161), (43, 504243), (129, 168081), (179, 121131), (313, 69273), (387, 56027), (537, 40377), (939, 23091), (1611, 13459), (2817, 7697)]