66777777

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{503}}^1$

素因数の和:675

約数の個数: 40

約数和(自身を含む): 109771200

約数和(自身を除く): 42993423

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 149, 297, 447, 503, 891, 1341, 1509, 1639, 4023, 4527, 4917, 5533, 12069, 13581, 14751, 16599, 40743, 44253, 49797, 74947, 132759, 149391, 224841, 448173, 674523, 824417, 2023569, 2473251, 6070707, 7419753, 22259259, 66777777]

約数ペア:

[(1, 66777777), (3, 22259259), (9, 7419753), (11, 6070707), (27, 2473251), (33, 2023569), (81, 824417), (99, 674523), (149, 448173), (297, 224841), (447, 149391), (503, 132759), (891, 74947), (1341, 49797), (1509, 44253), (1639, 40743), (4023, 16599), (4527, 14751), (4917, 13581), (5533, 12069)]