20809906

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{13121}}^1$

素因数の和:13197

約数の個数: 16

約数和(自身を含む): 34169688

約数和(自身を除く): 13359782

約数列:

[1, 2, 13, 26, 61, 122, 793, 1586, 13121, 26242, 170573, 341146, 800381, 1600762, 10404953, 20809906]

約数ペア:

[(1, 20809906), (2, 10404953), (13, 1600762), (26, 800381), (61, 341146), (122, 170573), (793, 26242), (1586, 13121)]