208991469

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1\times {\mathrm{431}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 301916160

約数和(自身を除く): 92924691

約数列:

[1, 3, 19, 47, 57, 141, 181, 431, 543, 893, 1293, 2679, 3439, 8189, 8507, 10317, 20257, 24567, 25521, 60771, 78011, 161633, 234033, 384883, 484899, 1154649, 1482209, 3666517, 4446627, 10999551, 69663823, 208991469]

約数ペア:

[(1, 208991469), (3, 69663823), (19, 10999551), (47, 4446627), (57, 3666517), (141, 1482209), (181, 1154649), (431, 484899), (543, 384883), (893, 234033), (1293, 161633), (2679, 78011), (3439, 60771), (8189, 25521), (8507, 24567), (10317, 20257)]