28931991

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{20389}}^1$

素因数の和:20446

約数の個数: 16

約数和(自身を含む): 43063680

約数和(自身を除く): 14131689

約数列:

[1, 3, 11, 33, 43, 129, 473, 1419, 20389, 61167, 224279, 672837, 876727, 2630181, 9643997, 28931991]

約数ペア:

[(1, 28931991), (3, 9643997), (11, 2630181), (33, 876727), (43, 672837), (129, 224279), (473, 61167), (1419, 20389)]