21493881

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1879}}^1$

素因数の和:1957

約数の個数: 24

約数和(自身を含む): 32847360

約数和(自身を除く): 11353479

約数列:

[1, 3, 9, 31, 41, 93, 123, 279, 369, 1271, 1879, 3813, 5637, 11439, 16911, 58249, 77039, 174747, 231117, 524241, 693351, 2388209, 7164627, 21493881]

約数ペア:

[(1, 21493881), (3, 7164627), (9, 2388209), (31, 693351), (41, 524241), (93, 231117), (123, 174747), (279, 77039), (369, 58249), (1271, 16911), (1879, 11439), (3813, 5637)]