19978304

素因数分解:

$2^6\times {\mathrm{312161}}^1$

素因数の和:312173

約数の個数: 14

約数和(自身を含む): 39644574

約数和(自身を除く): 19666270

約数列:

[1, 2, 4, 8, 16, 32, 64, 312161, 624322, 1248644, 2497288, 4994576, 9989152, 19978304]

約数ペア:

[(1, 19978304), (2, 9989152), (4, 4994576), (8, 2497288), (16, 1248644), (32, 624322), (64, 312161)]