20831951

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2753}}^1$

素因数の和:2830

約数の個数: 16

約数和(自身を含む): 25380864

約数和(自身を除く): 4548913

約数列:

[1, 7, 23, 47, 161, 329, 1081, 2753, 7567, 19271, 63319, 129391, 443233, 905737, 2975993, 20831951]

約数ペア:

[(1, 20831951), (7, 2975993), (23, 905737), (47, 443233), (161, 129391), (329, 63319), (1081, 19271), (2753, 7567)]