20508477

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{263}}^1$

素因数の和:433

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 11424963

約数列:

[1, 3, 11, 17, 33, 51, 139, 187, 263, 417, 561, 789, 1529, 2363, 2893, 4471, 4587, 7089, 8679, 13413, 25993, 36557, 49181, 77979, 109671, 147543, 402127, 621469, 1206381, 1864407, 6836159, 20508477]

約数ペア:

[(1, 20508477), (3, 6836159), (11, 1864407), (17, 1206381), (33, 621469), (51, 402127), (139, 147543), (187, 109671), (263, 77979), (417, 49181), (561, 36557), (789, 25993), (1529, 13413), (2363, 8679), (2893, 7089), (4471, 4587)]