18871540

素因数分解:

$2^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{4889}}^1$

素因数の和:5091

約数の個数: 24

約数和(自身を含む): 39843720

約数和(自身を除く): 20972180

約数列:

[1, 2, 4, 5, 10, 20, 193, 386, 772, 965, 1930, 3860, 4889, 9778, 19556, 24445, 48890, 97780, 943577, 1887154, 3774308, 4717885, 9435770, 18871540]

約数ペア:

[(1, 18871540), (2, 9435770), (4, 4717885), (5, 3774308), (10, 1887154), (20, 943577), (193, 97780), (386, 48890), (772, 24445), (965, 19556), (1930, 9778), (3860, 4889)]