81161919

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{24439}}^1$

素因数の和:24492

約数の個数: 20

約数和(自身を含む): 124204080

約数和(自身を除く): 43042161

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 24439, 73317, 219951, 659853, 1001999, 1979559, 3005997, 9017991, 27053973, 81161919]

約数ペア:

[(1, 81161919), (3, 27053973), (9, 9017991), (27, 3005997), (41, 1979559), (81, 1001999), (123, 659853), (369, 219951), (1107, 73317), (3321, 24439)]