20639824

素因数分解:

$2^4\times {\mathrm{277}}^1\times {\mathrm{4657}}^1$

素因数の和:4942

約数の個数: 20

約数和(自身を含む): 40142644

約数和(自身を除く): 19502820

約数列:

[1, 2, 4, 8, 16, 277, 554, 1108, 2216, 4432, 4657, 9314, 18628, 37256, 74512, 1289989, 2579978, 5159956, 10319912, 20639824]

約数ペア:

[(1, 20639824), (2, 10319912), (4, 5159956), (8, 2579978), (16, 1289989), (277, 74512), (554, 37256), (1108, 18628), (2216, 9314), (4432, 4657)]