21043773

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{127}}^1$

素因数の和:191

約数の個数: 48

約数和(自身を含む): 35112960

約数和(自身を除く): 14069187

約数列:

[1, 3, 9, 17, 19, 27, 51, 57, 127, 153, 171, 323, 361, 381, 459, 513, 969, 1083, 1143, 2159, 2413, 2907, 3249, 3429, 6137, 6477, 7239, 8721, 9747, 18411, 19431, 21717, 41021, 45847, 55233, 58293, 65151, 123063, 137541, 165699, 369189, 412623, 779399, 1107567, 1237869, 2338197, 7014591, 21043773]

約数ペア:

[(1, 21043773), (3, 7014591), (9, 2338197), (17, 1237869), (19, 1107567), (27, 779399), (51, 412623), (57, 369189), (127, 165699), (153, 137541), (171, 123063), (323, 65151), (361, 58293), (381, 55233), (459, 45847), (513, 41021), (969, 21717), (1083, 19431), (1143, 18411), (2159, 9747), (2413, 8721), (2907, 7239), (3249, 6477), (3429, 6137)]