20581906

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1\times {\mathrm{751}}^1$

素因数の和:1017

約数の個数: 16

約数和(自身を含む): 31511808

約数和(自身を除く): 10929902

約数列:

[1, 2, 71, 142, 193, 386, 751, 1502, 13703, 27406, 53321, 106642, 144943, 289886, 10290953, 20581906]

約数ペア:

[(1, 20581906), (2, 10290953), (71, 289886), (142, 144943), (193, 106642), (386, 53321), (751, 27406), (1502, 13703)]