20731657331

素因数分解:

$7^1\times {\mathrm{11}}^3\times {\mathrm{37}}^1\times {\mathrm{60139}}^1$

素因数の和:60216

約数の個数: 32

約数和(自身を含む): 26765667840

約数和(自身を除く): 6034010509

約数列:

[1, 7, 11, 37, 77, 121, 259, 407, 847, 1331, 2849, 4477, 9317, 31339, 49247, 60139, 344729, 420973, 661529, 2225143, 4630703, 7276819, 15576001, 24476573, 50937733, 80045009, 171336011, 269242303, 560315063, 1884696121, 2961665333, 20731657331]

約数ペア:

[(1, 20731657331), (7, 2961665333), (11, 1884696121), (37, 560315063), (77, 269242303), (121, 171336011), (259, 80045009), (407, 50937733), (847, 24476573), (1331, 15576001), (2849, 7276819), (4477, 4630703), (9317, 2225143), (31339, 661529), (49247, 420973), (60139, 344729)]