20409873

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 31186944

約数和(自身を除く): 10777071

約数列:

[1, 3, 11, 31, 33, 71, 93, 213, 281, 341, 781, 843, 1023, 2201, 2343, 3091, 6603, 8711, 9273, 19951, 24211, 26133, 59853, 72633, 95821, 219461, 287463, 618481, 658383, 1855443, 6803291, 20409873]

約数ペア:

[(1, 20409873), (3, 6803291), (11, 1855443), (31, 658383), (33, 618481), (71, 287463), (93, 219461), (213, 95821), (281, 72633), (341, 59853), (781, 26133), (843, 24211), (1023, 19951), (2201, 9273), (2343, 8711), (3091, 6603)]