261854649

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{96661}}^1$

素因数の和:96717

約数の個数: 24

約数和(自身を含む): 442325312

約数和(自身を除く): 180470663

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 96661, 289983, 676627, 869949, 2029881, 4156423, 6089643, 12469269, 29094961, 37407807, 87284883, 261854649]

約数ペア:

[(1, 261854649), (3, 87284883), (7, 37407807), (9, 29094961), (21, 12469269), (43, 6089643), (63, 4156423), (129, 2029881), (301, 869949), (387, 676627), (903, 289983), (2709, 96661)]