21210489

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{1223}}^1$

素因数の和:1317

約数の個数: 24

約数和(自身を含む): 32078592

約数和(自身を除く): 10868103

約数列:

[1, 3, 9, 41, 47, 123, 141, 369, 423, 1223, 1927, 3669, 5781, 11007, 17343, 50143, 57481, 150429, 172443, 451287, 517329, 2356721, 7070163, 21210489]

約数ペア:

[(1, 21210489), (3, 7070163), (9, 2356721), (41, 517329), (47, 451287), (123, 172443), (141, 150429), (369, 57481), (423, 50143), (1223, 17343), (1927, 11007), (3669, 5781)]