20137208

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:364

約数の個数: 64

約数和(自身を含む): 47040000

約数和(自身を除く): 26902792

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 139, 182, 199, 278, 364, 398, 556, 728, 796, 973, 1112, 1393, 1592, 1807, 1946, 2587, 2786, 3614, 3892, 5174, 5572, 7228, 7784, 10348, 11144, 12649, 14456, 18109, 20696, 25298, 27661, 36218, 50596, 55322, 72436, 101192, 110644, 144872, 193627, 221288, 359593, 387254, 719186, 774508, 1438372, 1549016, 2517151, 2876744, 5034302, 10068604, 20137208]

約数ペア:

[(1, 20137208), (2, 10068604), (4, 5034302), (7, 2876744), (8, 2517151), (13, 1549016), (14, 1438372), (26, 774508), (28, 719186), (52, 387254), (56, 359593), (91, 221288), (104, 193627), (139, 144872), (182, 110644), (199, 101192), (278, 72436), (364, 55322), (398, 50596), (556, 36218), (728, 27661), (796, 25298), (973, 20696), (1112, 18109), (1393, 14456), (1592, 12649), (1807, 11144), (1946, 10348), (2587, 7784), (2786, 7228), (3614, 5572), (3892, 5174)]