20589700

素因数分解:

$2^2\times 5^2\times {\mathrm{103}}^1\times {\mathrm{1999}}^1$

素因数の和:2116

約数の個数: 36

約数和(自身を含む): 45136000

約数和(自身を除く): 24546300

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 103, 206, 412, 515, 1030, 1999, 2060, 2575, 3998, 5150, 7996, 9995, 10300, 19990, 39980, 49975, 99950, 199900, 205897, 411794, 823588, 1029485, 2058970, 4117940, 5147425, 10294850, 20589700]

約数ペア:

[(1, 20589700), (2, 10294850), (4, 5147425), (5, 4117940), (10, 2058970), (20, 1029485), (25, 823588), (50, 411794), (100, 205897), (103, 199900), (206, 99950), (412, 49975), (515, 39980), (1030, 19990), (1999, 10300), (2060, 9995), (2575, 7996), (3998, 5150)]