4999000

素因数分解:

$2^3\times 5^3\times {\mathrm{4999}}^1$

素因数の和:5020

約数の個数: 32

約数和(自身を含む): 11700000

約数和(自身を除く): 6701000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 4999, 9998, 19996, 24995, 39992, 49990, 99980, 124975, 199960, 249950, 499900, 624875, 999800, 1249750, 2499500, 4999000]

約数ペア:

[(1, 4999000), (2, 2499500), (4, 1249750), (5, 999800), (8, 624875), (10, 499900), (20, 249950), (25, 199960), (40, 124975), (50, 99980), (100, 49990), (125, 39992), (200, 24995), (250, 19996), (500, 9998), (1000, 4999)]