20628867

素因数分解:

$3^1\times 7^1\times {\mathrm{677}}^1\times {\mathrm{1451}}^1$

素因数の和:2138

約数の個数: 16

約数和(自身を含む): 31502592

約数和(自身を除く): 10873725

約数列:

[1, 3, 7, 21, 677, 1451, 2031, 4353, 4739, 10157, 14217, 30471, 982327, 2946981, 6876289, 20628867]

約数ペア:

[(1, 20628867), (3, 6876289), (7, 2946981), (21, 982327), (677, 30471), (1451, 14217), (2031, 10157), (4353, 4739)]