21047829

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{2521}}^1$

素因数の和:2569

約数の個数: 24

約数和(自身を含む): 32200896

約数和(自身を除く): 11153067

約数列:

[1, 3, 11, 23, 33, 69, 121, 253, 363, 759, 2521, 2783, 7563, 8349, 27731, 57983, 83193, 173949, 305041, 637813, 915123, 1913439, 7015943, 21047829]

約数ペア:

[(1, 21047829), (3, 7015943), (11, 1913439), (23, 915123), (33, 637813), (69, 305041), (121, 173949), (253, 83193), (363, 57983), (759, 27731), (2521, 8349), (2783, 7563)]