19948016

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{113341}}^1$

素因数の和:113360

約数の個数: 20

約数和(自身を含む): 42163224

約数和(自身を除く): 22215208

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 113341, 226682, 453364, 906728, 1246751, 1813456, 2493502, 4987004, 9974008, 19948016]

約数ペア:

[(1, 19948016), (2, 9974008), (4, 4987004), (8, 2493502), (11, 1813456), (16, 1246751), (22, 906728), (44, 453364), (88, 226682), (176, 113341)]