21584619

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{5807}}^1$

素因数の和:5879

約数の個数: 24

約数和(自身を含む): 36241920

約数和(自身を除く): 14657301

約数列:

[1, 3, 7, 9, 21, 59, 63, 177, 413, 531, 1239, 3717, 5807, 17421, 40649, 52263, 121947, 342613, 365841, 1027839, 2398291, 3083517, 7194873, 21584619]

約数ペア:

[(1, 21584619), (3, 7194873), (7, 3083517), (9, 2398291), (21, 1027839), (59, 365841), (63, 342613), (177, 121947), (413, 52263), (531, 40649), (1239, 17421), (3717, 5807)]