28121884

素因数分解:

$2^2\times 7^3\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:327

約数の個数: 48

約数和(自身を含む): 58240000

約数和(自身を除く): 30118116

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 103, 196, 199, 206, 343, 398, 412, 686, 721, 796, 1372, 1393, 1442, 2786, 2884, 5047, 5572, 9751, 10094, 19502, 20188, 20497, 35329, 39004, 40994, 68257, 70658, 81988, 136514, 141316, 143479, 273028, 286958, 573916, 1004353, 2008706, 4017412, 7030471, 14060942, 28121884]

約数ペア:

[(1, 28121884), (2, 14060942), (4, 7030471), (7, 4017412), (14, 2008706), (28, 1004353), (49, 573916), (98, 286958), (103, 273028), (196, 143479), (199, 141316), (206, 136514), (343, 81988), (398, 70658), (412, 68257), (686, 40994), (721, 39004), (796, 35329), (1372, 20497), (1393, 20188), (1442, 19502), (2786, 10094), (2884, 9751), (5047, 5572)]