256891286

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{967}}^1\times {\mathrm{6991}}^1$

素因数の和:7979

約数の個数: 16

約数和(自身を含む): 406095360

約数和(自身を除く): 149204074

約数列:

[1, 2, 19, 38, 967, 1934, 6991, 13982, 18373, 36746, 132829, 265658, 6760297, 13520594, 128445643, 256891286]

約数ペア:

[(1, 256891286), (2, 128445643), (19, 13520594), (38, 6760297), (967, 265658), (1934, 132829), (6991, 36746), (13982, 18373)]