20875100

素因数分解:

$2^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{1049}}^1$

素因数の和:1262

約数の個数: 36

約数和(自身を含む): 45570000

約数和(自身を除く): 24694900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199, 398, 796, 995, 1049, 1990, 2098, 3980, 4196, 4975, 5245, 9950, 10490, 19900, 20980, 26225, 52450, 104900, 208751, 417502, 835004, 1043755, 2087510, 4175020, 5218775, 10437550, 20875100]

約数ペア:

[(1, 20875100), (2, 10437550), (4, 5218775), (5, 4175020), (10, 2087510), (20, 1043755), (25, 835004), (50, 417502), (100, 208751), (199, 104900), (398, 52450), (796, 26225), (995, 20980), (1049, 19900), (1990, 10490), (2098, 9950), (3980, 5245), (4196, 4975)]