21288286

素因数分解:

$2^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1\times {\mathrm{421}}^1$

素因数の和:747

約数の個数: 16

約数和(自身を含む): 32419728

約数和(自身を除く): 11131442

約数列:

[1, 2, 131, 193, 262, 386, 421, 842, 25283, 50566, 55151, 81253, 110302, 162506, 10644143, 21288286]

約数ペア:

[(1, 21288286), (2, 10644143), (131, 162506), (193, 110302), (262, 81253), (386, 55151), (421, 50566), (842, 25283)]