256839

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:238

約数の個数: 16

約数和(自身を含む): 384384

約数和(自身を除く): 127545

約数列:

[1, 3, 11, 33, 43, 129, 181, 473, 543, 1419, 1991, 5973, 7783, 23349, 85613, 256839]

約数ペア:

[(1, 256839), (3, 85613), (11, 23349), (33, 7783), (43, 5973), (129, 1991), (181, 1419), (473, 543)]