19949824

素因数分解:

$2^8\times {\mathrm{77929}}^1$

素因数の和:77945

約数の個数: 18

約数和(自身を含む): 39822230

約数和(自身を除く): 19872406

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 77929, 155858, 311716, 623432, 1246864, 2493728, 4987456, 9974912, 19949824]

約数ペア:

[(1, 19949824), (2, 9974912), (4, 4987456), (8, 2493728), (16, 1246864), (32, 623432), (64, 311716), (128, 155858), (256, 77929)]