19906816

素因数分解:

$2^8\times {\mathrm{77761}}^1$

素因数の和:77777

約数の個数: 18

約数和(自身を含む): 39736382

約数和(自身を除く): 19829566

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 77761, 155522, 311044, 622088, 1244176, 2488352, 4976704, 9953408, 19906816]

約数ペア:

[(1, 19906816), (2, 9953408), (4, 4976704), (8, 2488352), (16, 1244176), (32, 622088), (64, 311044), (128, 155522), (256, 77761)]