49900000

素因数分解:

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

素因数の和:534

約数の個数: 72

約数和(自身を含む): 123039000

約数和(自身を除く): 73139000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 499, 500, 625, 800, 998, 1000, 1250, 1996, 2000, 2495, 2500, 3125, 3992, 4000, 4990, 5000, 6250, 7984, 9980, 10000, 12475, 12500, 15968, 19960, 20000, 24950, 25000, 39920, 49900, 50000, 62375, 79840, 99800, 100000, 124750, 199600, 249500, 311875, 399200, 499000, 623750, 998000, 1247500, 1559375, 1996000, 2495000, 3118750, 4990000, 6237500, 9980000, 12475000, 24950000, 49900000]

約数ペア:

[(1, 49900000), (2, 24950000), (4, 12475000), (5, 9980000), (8, 6237500), (10, 4990000), (16, 3118750), (20, 2495000), (25, 1996000), (32, 1559375), (40, 1247500), (50, 998000), (80, 623750), (100, 499000), (125, 399200), (160, 311875), (200, 249500), (250, 199600), (400, 124750), (499, 100000), (500, 99800), (625, 79840), (800, 62375), (998, 50000), (1000, 49900), (1250, 39920), (1996, 25000), (2000, 24950), (2495, 20000), (2500, 19960), (3125, 15968), (3992, 12500), (4000, 12475), (4990, 10000), (5000, 9980), (6250, 7984)]