2121800

素因数分解:

$2^3\times 5^2\times {\mathrm{103}}^2$

素因数の和:222

約数の個数: 36

約数和(自身を含む): 4981545

約数和(自身を除く): 2859745

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 103, 200, 206, 412, 515, 824, 1030, 2060, 2575, 4120, 5150, 10300, 10609, 20600, 21218, 42436, 53045, 84872, 106090, 212180, 265225, 424360, 530450, 1060900, 2121800]

約数ペア:

[(1, 2121800), (2, 1060900), (4, 530450), (5, 424360), (8, 265225), (10, 212180), (20, 106090), (25, 84872), (40, 53045), (50, 42436), (100, 21218), (103, 20600), (200, 10609), (206, 10300), (412, 5150), (515, 4120), (824, 2575), (1030, 2060)]