21108585

素因数分解:

$3^1\times 5^1\times {\mathrm{1019}}^1\times {\mathrm{1381}}^1$

素因数の和:2408

約数の個数: 16

約数和(自身を含む): 33831360

約数和(自身を除く): 12722775

約数列:

[1, 3, 5, 15, 1019, 1381, 3057, 4143, 5095, 6905, 15285, 20715, 1407239, 4221717, 7036195, 21108585]

約数ペア:

[(1, 21108585), (3, 7036195), (5, 4221717), (15, 1407239), (1019, 20715), (1381, 15285), (3057, 6905), (4143, 5095)]