21137180

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5839}}^1$

素因数の和:6029

約数の個数: 24

約数和(自身を含む): 44640960

約数和(自身を除く): 23503780

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 5839, 11678, 23356, 29195, 58390, 116780, 1056859, 2113718, 4227436, 5284295, 10568590, 21137180]

約数ペア:

[(1, 21137180), (2, 10568590), (4, 5284295), (5, 4227436), (10, 2113718), (20, 1056859), (181, 116780), (362, 58390), (724, 29195), (905, 23356), (1810, 11678), (3620, 5839)]