20167637

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{647}}^1$

素因数の和:788

約数の個数: 16

約数和(自身を含む): 23784192

約数和(自身を除く): 3616555

約数列:

[1, 7, 61, 73, 427, 511, 647, 4453, 4529, 31171, 39467, 47231, 276269, 330617, 2881091, 20167637]

約数ペア:

[(1, 20167637), (7, 2881091), (61, 330617), (73, 276269), (427, 47231), (511, 39467), (647, 31171), (4453, 4529)]