24950000

素因数分解:

$2^4\times 5^5\times {\mathrm{499}}^1$

素因数の和:532

約数の個数: 60

約数和(自身を含む): 60543000

約数和(自身を除く): 35593000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 499, 500, 625, 998, 1000, 1250, 1996, 2000, 2495, 2500, 3125, 3992, 4990, 5000, 6250, 7984, 9980, 10000, 12475, 12500, 19960, 24950, 25000, 39920, 49900, 50000, 62375, 99800, 124750, 199600, 249500, 311875, 499000, 623750, 998000, 1247500, 1559375, 2495000, 3118750, 4990000, 6237500, 12475000, 24950000]

約数ペア:

[(1, 24950000), (2, 12475000), (4, 6237500), (5, 4990000), (8, 3118750), (10, 2495000), (16, 1559375), (20, 1247500), (25, 998000), (40, 623750), (50, 499000), (80, 311875), (100, 249500), (125, 199600), (200, 124750), (250, 99800), (400, 62375), (499, 50000), (500, 49900), (625, 39920), (998, 25000), (1000, 24950), (1250, 19960), (1996, 12500), (2000, 12475), (2495, 10000), (2500, 9980), (3125, 7984), (3992, 6250), (4990, 5000)]