20866377

素因数分解:

$3^1\times 7^1\times {\mathrm{449}}^1\times {\mathrm{2213}}^1$

素因数の和:2672

約数の個数: 16

約数和(自身を含む): 31881600

約数和(自身を除く): 11015223

約数列:

[1, 3, 7, 21, 449, 1347, 2213, 3143, 6639, 9429, 15491, 46473, 993637, 2980911, 6955459, 20866377]

約数ペア:

[(1, 20866377), (3, 6955459), (7, 2980911), (21, 993637), (449, 46473), (1347, 15491), (2213, 9429), (3143, 6639)]