20168811

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1553}}^1$

素因数の和:1612

約数の個数: 32

約数和(自身を含む): 33069120

約数和(自身を除く): 12900309

約数列:

[1, 3, 9, 13, 27, 37, 39, 111, 117, 333, 351, 481, 999, 1443, 1553, 4329, 4659, 12987, 13977, 20189, 41931, 57461, 60567, 172383, 181701, 517149, 545103, 746993, 1551447, 2240979, 6722937, 20168811]

約数ペア:

[(1, 20168811), (3, 6722937), (9, 2240979), (13, 1551447), (27, 746993), (37, 545103), (39, 517149), (111, 181701), (117, 172383), (333, 60567), (351, 57461), (481, 41931), (999, 20189), (1443, 13977), (1553, 12987), (4329, 4659)]