208178523

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{76847}}^1$

素因数の和:76903

約数の個数: 24

約数和(自身を含む): 351656448

約数和(自身を除く): 143477925

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 76847, 230541, 537929, 691623, 1613787, 3304421, 4841361, 9913263, 23130947, 29739789, 69392841, 208178523]

約数ペア:

[(1, 208178523), (3, 69392841), (7, 29739789), (9, 23130947), (21, 9913263), (43, 4841361), (63, 3304421), (129, 1613787), (301, 691623), (387, 537929), (903, 230541), (2709, 76847)]