18508929

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{881}}^1$

素因数の和:1080

約数の個数: 16

約数和(自身を含む): 25401600

約数和(自身を除く): 6892671

約数列:

[1, 3, 47, 141, 149, 447, 881, 2643, 7003, 21009, 41407, 124221, 131269, 393807, 6169643, 18508929]

約数ペア:

[(1, 18508929), (3, 6169643), (47, 393807), (141, 131269), (149, 124221), (447, 41407), (881, 21009), (2643, 7003)]