20882264

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1009}}^1$

素因数の和:1227

約数の個数: 32

約数和(自身を含む): 42420000

約数和(自身を除く): 21537736

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 199, 398, 796, 1009, 1592, 2018, 2587, 4036, 5174, 8072, 10348, 13117, 20696, 26234, 52468, 104936, 200791, 401582, 803164, 1606328, 2610283, 5220566, 10441132, 20882264]

約数ペア:

[(1, 20882264), (2, 10441132), (4, 5220566), (8, 2610283), (13, 1606328), (26, 803164), (52, 401582), (104, 200791), (199, 104936), (398, 52468), (796, 26234), (1009, 20696), (1592, 13117), (2018, 10348), (2587, 8072), (4036, 5174)]