21809648

素因数分解:

$2^4\times 7^1\times {\mathrm{194729}}^1$

素因数の和:194744

約数の個数: 20

約数和(自身を含む): 48293040

約数和(自身を除く): 26483392

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 194729, 389458, 778916, 1363103, 1557832, 2726206, 3115664, 5452412, 10904824, 21809648]

約数ペア:

[(1, 21809648), (2, 10904824), (4, 5452412), (7, 3115664), (8, 2726206), (14, 1557832), (16, 1363103), (28, 778916), (56, 389458), (112, 194729)]