20680245

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9011}}^1$

素因数の和:9042

約数の個数: 32

約数和(自身を含む): 38931840

約数和(自身を除く): 18251595

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 9011, 27033, 45055, 81099, 135165, 153187, 243297, 405495, 459561, 765935, 1216485, 1378683, 2297805, 4136049, 6893415, 20680245]

約数ペア:

[(1, 20680245), (3, 6893415), (5, 4136049), (9, 2297805), (15, 1378683), (17, 1216485), (27, 765935), (45, 459561), (51, 405495), (85, 243297), (135, 153187), (153, 135165), (255, 81099), (459, 45055), (765, 27033), (2295, 9011)]