21686224

素因数分解:

$2^4\times 7^2\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:360

約数の個数: 60

約数和(自身を含む): 49476000

約数和(自身を除く): 27789776

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 139, 196, 199, 278, 392, 398, 556, 784, 796, 973, 1112, 1393, 1592, 1946, 2224, 2786, 3184, 3892, 5572, 6811, 7784, 9751, 11144, 13622, 15568, 19502, 22288, 27244, 27661, 39004, 54488, 55322, 78008, 108976, 110644, 156016, 193627, 221288, 387254, 442576, 774508, 1355389, 1549016, 2710778, 3098032, 5421556, 10843112, 21686224]

約数ペア:

[(1, 21686224), (2, 10843112), (4, 5421556), (7, 3098032), (8, 2710778), (14, 1549016), (16, 1355389), (28, 774508), (49, 442576), (56, 387254), (98, 221288), (112, 193627), (139, 156016), (196, 110644), (199, 108976), (278, 78008), (392, 55322), (398, 54488), (556, 39004), (784, 27661), (796, 27244), (973, 22288), (1112, 19502), (1393, 15568), (1592, 13622), (1946, 11144), (2224, 9751), (2786, 7784), (3184, 6811), (3892, 5572)]