515000

素因数分解:

$2^3\times 5^4\times {\mathrm{103}}^1$

素因数の和:129

約数の個数: 40

約数和(自身を含む): 1218360

約数和(自身を除く): 703360

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 103, 125, 200, 206, 250, 412, 500, 515, 625, 824, 1000, 1030, 1250, 2060, 2500, 2575, 4120, 5000, 5150, 10300, 12875, 20600, 25750, 51500, 64375, 103000, 128750, 257500, 515000]

約数ペア:

[(1, 515000), (2, 257500), (4, 128750), (5, 103000), (8, 64375), (10, 51500), (20, 25750), (25, 20600), (40, 12875), (50, 10300), (100, 5150), (103, 5000), (125, 4120), (200, 2575), (206, 2500), (250, 2060), (412, 1250), (500, 1030), (515, 1000), (625, 824)]