7775991

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{283}}^1$

素因数の和:403

約数の個数: 24

約数和(自身を含む): 11696256

約数和(自身を除く): 3920265

約数列:

[1, 3, 9, 43, 71, 129, 213, 283, 387, 639, 849, 2547, 3053, 9159, 12169, 20093, 27477, 36507, 60279, 109521, 180837, 863999, 2591997, 7775991]

約数ペア:

[(1, 7775991), (3, 2591997), (9, 863999), (43, 180837), (71, 109521), (129, 60279), (213, 36507), (283, 27477), (387, 20093), (639, 12169), (849, 9159), (2547, 3053)]