21180825

素因数分解:

$3^3\times 5^2\times {\mathrm{31379}}^1$

素因数の和:31398

約数の個数: 24

約数和(自身を含む): 38911200

約数和(自身を除く): 17730375

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 31379, 94137, 156895, 282411, 470685, 784475, 847233, 1412055, 2353425, 4236165, 7060275, 21180825]

約数ペア:

[(1, 21180825), (3, 7060275), (5, 4236165), (9, 2353425), (15, 1412055), (25, 847233), (27, 784475), (45, 470685), (75, 282411), (135, 156895), (225, 94137), (675, 31379)]