257989551

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{977}}^1$

素因数の和:1135

約数の個数: 32

約数和(自身を含む): 371796480

約数和(自身を除く): 113806929

約数列:

[1, 3, 23, 43, 69, 89, 129, 267, 977, 989, 2047, 2931, 2967, 3827, 6141, 11481, 22471, 42011, 67413, 86953, 88021, 126033, 260859, 264063, 966253, 1999919, 2898759, 3738979, 5999757, 11216937, 85996517, 257989551]

約数ペア:

[(1, 257989551), (3, 85996517), (23, 11216937), (43, 5999757), (69, 3738979), (89, 2898759), (129, 1999919), (267, 966253), (977, 264063), (989, 260859), (2047, 126033), (2931, 88021), (2967, 86953), (3827, 67413), (6141, 42011), (11481, 22471)]