21543903

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{179}}^1\times {\mathrm{311}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 32123520

約数和(自身を除く): 10579617

約数列:

[1, 3, 9, 43, 129, 179, 311, 387, 537, 933, 1611, 2799, 7697, 13373, 23091, 40119, 55669, 69273, 120357, 167007, 501021, 2393767, 7181301, 21543903]

約数ペア:

[(1, 21543903), (3, 7181301), (9, 2393767), (43, 501021), (129, 167007), (179, 120357), (311, 69273), (387, 55669), (537, 40119), (933, 23091), (1611, 13373), (2799, 7697)]