209380400

素因数分解:

$2^4\times 5^2\times {\mathrm{499}}^1\times {\mathrm{1049}}^1$

素因数の和:1566

約数の個数: 60

約数和(自身を含む): 504525000

約数和(自身を除く): 295144600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 499, 998, 1049, 1996, 2098, 2495, 3992, 4196, 4990, 5245, 7984, 8392, 9980, 10490, 12475, 16784, 19960, 20980, 24950, 26225, 39920, 41960, 49900, 52450, 83920, 99800, 104900, 199600, 209800, 419600, 523451, 1046902, 2093804, 2617255, 4187608, 5234510, 8375216, 10469020, 13086275, 20938040, 26172550, 41876080, 52345100, 104690200, 209380400]

約数ペア:

[(1, 209380400), (2, 104690200), (4, 52345100), (5, 41876080), (8, 26172550), (10, 20938040), (16, 13086275), (20, 10469020), (25, 8375216), (40, 5234510), (50, 4187608), (80, 2617255), (100, 2093804), (200, 1046902), (400, 523451), (499, 419600), (998, 209800), (1049, 199600), (1996, 104900), (2098, 99800), (2495, 83920), (3992, 52450), (4196, 49900), (4990, 41960), (5245, 39920), (7984, 26225), (8392, 24950), (9980, 20980), (10490, 19960), (12475, 16784)]