20478692

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1979}}^1$

素因数の和:2195

約数の個数: 24

約数和(自身を含む): 38808000

約数和(自身を除く): 18329308

約数列:

[1, 2, 4, 13, 26, 52, 199, 398, 796, 1979, 2587, 3958, 5174, 7916, 10348, 25727, 51454, 102908, 393821, 787642, 1575284, 5119673, 10239346, 20478692]

約数ペア:

[(1, 20478692), (2, 10239346), (4, 5119673), (13, 1575284), (26, 787642), (52, 393821), (199, 102908), (398, 51454), (796, 25727), (1979, 10348), (2587, 7916), (3958, 5174)]