19687636

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{3947}}^1$

素因数の和:4023

約数の個数: 24

約数和(自身を含む): 36479520

約数和(自身を除く): 16791884

約数列:

[1, 2, 4, 29, 43, 58, 86, 116, 172, 1247, 2494, 3947, 4988, 7894, 15788, 114463, 169721, 228926, 339442, 457852, 678884, 4921909, 9843818, 19687636]

約数ペア:

[(1, 19687636), (2, 9843818), (4, 4921909), (29, 678884), (43, 457852), (58, 339442), (86, 228926), (116, 169721), (172, 114463), (1247, 15788), (2494, 7894), (3947, 4988)]