21150992

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77761}}^1$

素因数の和:77786

約数の個数: 20

約数和(自身を含む): 43391196

約数和(自身を除く): 22240204

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77761, 155522, 311044, 622088, 1244176, 1321937, 2643874, 5287748, 10575496, 21150992]

約数ペア:

[(1, 21150992), (2, 10575496), (4, 5287748), (8, 2643874), (16, 1321937), (17, 1244176), (34, 622088), (68, 311044), (136, 155522), (272, 77761)]