18535473

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:387

約数の個数: 40

約数和(自身を含む): 30735936

約数和(自身を除く): 12200463

約数列:

[1, 3, 9, 11, 27, 33, 71, 81, 99, 213, 293, 297, 639, 781, 879, 891, 1917, 2343, 2637, 3223, 5751, 7029, 7911, 9669, 20803, 21087, 23733, 29007, 62409, 63261, 87021, 187227, 228833, 261063, 561681, 686499, 1685043, 2059497, 6178491, 18535473]

約数ペア:

[(1, 18535473), (3, 6178491), (9, 2059497), (11, 1685043), (27, 686499), (33, 561681), (71, 261063), (81, 228833), (99, 187227), (213, 87021), (293, 63261), (297, 62409), (639, 29007), (781, 23733), (879, 21087), (891, 20803), (1917, 9669), (2343, 7911), (2637, 7029), (3223, 5751)]