21078808

素因数分解:

$2^3\times {\mathrm{1531}}^1\times {\mathrm{1721}}^1$

素因数の和:3258

約数の個数: 16

約数和(自身を含む): 39571560

約数和(自身を除く): 18492752

約数列:

[1, 2, 4, 8, 1531, 1721, 3062, 3442, 6124, 6884, 12248, 13768, 2634851, 5269702, 10539404, 21078808]

約数ペア:

[(1, 21078808), (2, 10539404), (4, 5269702), (8, 2634851), (1531, 13768), (1721, 12248), (3062, 6884), (3442, 6124)]