20321900

素因数分解:

$2^2\times 5^2\times {\mathrm{103}}^1\times {\mathrm{1973}}^1$

素因数の和:2090

約数の個数: 36

約数和(自身を含む): 44549232

約数和(自身を除く): 24227332

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 103, 206, 412, 515, 1030, 1973, 2060, 2575, 3946, 5150, 7892, 9865, 10300, 19730, 39460, 49325, 98650, 197300, 203219, 406438, 812876, 1016095, 2032190, 4064380, 5080475, 10160950, 20321900]

約数ペア:

[(1, 20321900), (2, 10160950), (4, 5080475), (5, 4064380), (10, 2032190), (20, 1016095), (25, 812876), (50, 406438), (100, 203219), (103, 197300), (206, 98650), (412, 49325), (515, 39460), (1030, 19730), (1973, 10300), (2060, 9865), (2575, 7892), (3946, 5150)]