20607489

素因数分解:

$3^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{563}}^1$

素因数の和:666

約数の個数: 36

約数和(自身を含む): 35105616

約数和(自身を除く): 14498127

約数列:

[1, 3, 7, 9, 21, 49, 63, 83, 147, 249, 441, 563, 581, 747, 1689, 1743, 3941, 4067, 5067, 5229, 11823, 12201, 27587, 35469, 36603, 46729, 82761, 140187, 248283, 327103, 420561, 981309, 2289721, 2943927, 6869163, 20607489]

約数ペア:

[(1, 20607489), (3, 6869163), (7, 2943927), (9, 2289721), (21, 981309), (49, 420561), (63, 327103), (83, 248283), (147, 140187), (249, 82761), (441, 46729), (563, 36603), (581, 35469), (747, 27587), (1689, 12201), (1743, 11823), (3941, 5229), (4067, 5067)]