1287500

素因数分解:

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

素因数の和:132

約数の個数: 36

約数和(自身を含む): 2843568

約数和(自身を除く): 1556068

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 103, 125, 206, 250, 412, 500, 515, 625, 1030, 1250, 2060, 2500, 2575, 3125, 5150, 6250, 10300, 12500, 12875, 25750, 51500, 64375, 128750, 257500, 321875, 643750, 1287500]

約数ペア:

[(1, 1287500), (2, 643750), (4, 321875), (5, 257500), (10, 128750), (20, 64375), (25, 51500), (50, 25750), (100, 12875), (103, 12500), (125, 10300), (206, 6250), (250, 5150), (412, 3125), (500, 2575), (515, 2500), (625, 2060), (1030, 1250)]