19726384

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{11311}}^1$

素因数の和:11428

約数の個数: 20

約数和(自身を含む): 38573920

約数和(自身を除く): 18847536

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 11311, 22622, 45244, 90488, 180976, 1232899, 2465798, 4931596, 9863192, 19726384]

約数ペア:

[(1, 19726384), (2, 9863192), (4, 4931596), (8, 2465798), (16, 1232899), (109, 180976), (218, 90488), (436, 45244), (872, 22622), (1744, 11311)]