21481785

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36721}}^1$

素因数の和:36745

約数の個数: 24

約数和(自身を含む): 40100424

約数和(自身を除く): 18618639

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 36721, 110163, 183605, 330489, 477373, 550815, 1432119, 1652445, 2386865, 4296357, 7160595, 21481785]

約数ペア:

[(1, 21481785), (3, 7160595), (5, 4296357), (9, 2386865), (13, 1652445), (15, 1432119), (39, 550815), (45, 477373), (65, 330489), (117, 183605), (195, 110163), (585, 36721)]