21019966

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{50287}}^1$

素因数の和:50319

約数の個数: 16

約数和(自身を含む): 36207360

約数和(自身を除く): 15187394

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 50287, 100574, 553157, 955453, 1106314, 1910906, 10509983, 21019966]

約数ペア:

[(1, 21019966), (2, 10509983), (11, 1910906), (19, 1106314), (22, 955453), (38, 553157), (209, 100574), (418, 50287)]