28067500

素因数分解:

$2^2\times 5^4\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:236

約数の個数: 60

約数和(自身を含む): 62542480

約数和(自身を除く): 34474980

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 103, 109, 125, 206, 218, 250, 412, 436, 500, 515, 545, 625, 1030, 1090, 1250, 2060, 2180, 2500, 2575, 2725, 5150, 5450, 10300, 10900, 11227, 12875, 13625, 22454, 25750, 27250, 44908, 51500, 54500, 56135, 64375, 68125, 112270, 128750, 136250, 224540, 257500, 272500, 280675, 561350, 1122700, 1403375, 2806750, 5613500, 7016875, 14033750, 28067500]

約数ペア:

[(1, 28067500), (2, 14033750), (4, 7016875), (5, 5613500), (10, 2806750), (20, 1403375), (25, 1122700), (50, 561350), (100, 280675), (103, 272500), (109, 257500), (125, 224540), (206, 136250), (218, 128750), (250, 112270), (412, 68125), (436, 64375), (500, 56135), (515, 54500), (545, 51500), (625, 44908), (1030, 27250), (1090, 25750), (1250, 22454), (2060, 13625), (2180, 12875), (2500, 11227), (2575, 10900), (2725, 10300), (5150, 5450)]