18216891

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{271}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 33266688

約数和(自身を除く): 15049797

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 97, 99, 231, 271, 291, 679, 693, 813, 873, 1067, 1897, 2037, 2439, 2981, 3201, 5691, 6111, 7469, 8943, 9603, 17073, 20867, 22407, 26287, 26829, 62601, 67221, 78861, 184009, 187803, 236583, 289157, 552027, 867471, 1656081, 2024099, 2602413, 6072297, 18216891]

約数ペア:

[(1, 18216891), (3, 6072297), (7, 2602413), (9, 2024099), (11, 1656081), (21, 867471), (33, 552027), (63, 289157), (77, 236583), (97, 187803), (99, 184009), (231, 78861), (271, 67221), (291, 62601), (679, 26829), (693, 26287), (813, 22407), (873, 20867), (1067, 17073), (1897, 9603), (2037, 8943), (2439, 7469), (2981, 6111), (3201, 5691)]