1999600

素因数分解:

$2^4\times 5^2\times {\mathrm{4999}}^1$

素因数の和:5017

約数の個数: 30

約数和(自身を含む): 4805000

約数和(自身を除く): 2805400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 4999, 9998, 19996, 24995, 39992, 49990, 79984, 99980, 124975, 199960, 249950, 399920, 499900, 999800, 1999600]

約数ペア:

[(1, 1999600), (2, 999800), (4, 499900), (5, 399920), (8, 249950), (10, 199960), (16, 124975), (20, 99980), (25, 79984), (40, 49990), (50, 39992), (80, 24995), (100, 19996), (200, 9998), (400, 4999)]