21150856

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155521}}^1$

素因数の和:155544

約数の個数: 16

約数和(自身を含む): 41990940

約数和(自身を除く): 20840084

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155521, 311042, 622084, 1244168, 2643857, 5287714, 10575428, 21150856]

約数ペア:

[(1, 21150856), (2, 10575428), (4, 5287714), (8, 2643857), (17, 1244168), (34, 622084), (68, 311042), (136, 155521)]