21748725

素因数分解:

$3^2\times 5^2\times {\mathrm{96661}}^1$

素因数の和:96677

約数の個数: 18

約数和(自身を含む): 38954786

約数和(自身を除く): 17206061

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 96661, 289983, 483305, 869949, 1449915, 2416525, 4349745, 7249575, 21748725]

約数ペア:

[(1, 21748725), (3, 7249575), (5, 4349745), (9, 2416525), (15, 1449915), (25, 869949), (45, 483305), (75, 289983), (225, 96661)]