1999900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{2857}}^1$

素因数の和:2878

約数の個数: 36

約数和(自身を含む): 4961488

約数和(自身を除く): 2961588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700, 2857, 5714, 11428, 14285, 19999, 28570, 39998, 57140, 71425, 79996, 99995, 142850, 199990, 285700, 399980, 499975, 999950, 1999900]

約数ペア:

[(1, 1999900), (2, 999950), (4, 499975), (5, 399980), (7, 285700), (10, 199990), (14, 142850), (20, 99995), (25, 79996), (28, 71425), (35, 57140), (50, 39998), (70, 28570), (100, 19999), (140, 14285), (175, 11428), (350, 5714), (700, 2857)]