21822160

素因数分解:

$2^4\times 5^1\times {\mathrm{272777}}^1$

素因数の和:272790

約数の個数: 20

約数和(自身を含む): 50736708

約数和(自身を除く): 28914548

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 272777, 545554, 1091108, 1363885, 2182216, 2727770, 4364432, 5455540, 10911080, 21822160]

約数ペア:

[(1, 21822160), (2, 10911080), (4, 5455540), (5, 4364432), (8, 2727770), (10, 2182216), (16, 1363885), (20, 1091108), (40, 545554), (80, 272777)]