18637017

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{20639}}^1$

素因数の和:20692

約数の個数: 16

約数和(自身を含む): 29061120

約数和(自身を除く): 10424103

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 20639, 61917, 144473, 433419, 887477, 2662431, 6212339, 18637017]

約数ペア:

[(1, 18637017), (3, 6212339), (7, 2662431), (21, 887477), (43, 433419), (129, 144473), (301, 61917), (903, 20639)]