18519111

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:477

約数の個数: 40

約数和(自身を含む): 30559760

約数和(自身を除く): 12040649

約数列:

[1, 3, 9, 13, 27, 39, 43, 81, 117, 129, 351, 387, 409, 559, 1053, 1161, 1227, 1677, 3483, 3681, 5031, 5317, 11043, 15093, 15951, 17587, 33129, 45279, 47853, 52761, 143559, 158283, 228631, 430677, 474849, 685893, 1424547, 2057679, 6173037, 18519111]

約数ペア:

[(1, 18519111), (3, 6173037), (9, 2057679), (13, 1424547), (27, 685893), (39, 474849), (43, 430677), (81, 228631), (117, 158283), (129, 143559), (351, 52761), (387, 47853), (409, 45279), (559, 33129), (1053, 17587), (1161, 15951), (1227, 15093), (1677, 11043), (3483, 5317), (3681, 5031)]