20647912

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{193}}^1\times {\mathrm{311}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 39948480

約数和(自身を除く): 19300568

約数列:

[1, 2, 4, 8, 43, 86, 172, 193, 311, 344, 386, 622, 772, 1244, 1544, 2488, 8299, 13373, 16598, 26746, 33196, 53492, 60023, 66392, 106984, 120046, 240092, 480184, 2580989, 5161978, 10323956, 20647912]

約数ペア:

[(1, 20647912), (2, 10323956), (4, 5161978), (8, 2580989), (43, 480184), (86, 240092), (172, 120046), (193, 106984), (311, 66392), (344, 60023), (386, 53492), (622, 33196), (772, 26746), (1244, 16598), (1544, 13373), (2488, 8299)]