21506091

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{881}}^1$

素因数の和:1066

約数の個数: 16

約数和(自身を含む): 29352960

約数和(自身を除く): 7846869

約数列:

[1, 3, 79, 103, 237, 309, 881, 2643, 8137, 24411, 69599, 90743, 208797, 272229, 7168697, 21506091]

約数ペア:

[(1, 21506091), (3, 7168697), (79, 272229), (103, 208797), (237, 90743), (309, 69599), (881, 24411), (2643, 8137)]