19387431

素因数分解:

$3^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1103}}^1$

素因数の和:1153

約数の個数: 40

約数和(自身を含む): 34197504

約数和(自身を除く): 14810073

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 81, 93, 189, 217, 279, 567, 651, 837, 1103, 1953, 2511, 3309, 5859, 7721, 9927, 17577, 23163, 29781, 34193, 69489, 89343, 102579, 208467, 239351, 307737, 625401, 718053, 923211, 2154159, 2769633, 6462477, 19387431]

約数ペア:

[(1, 19387431), (3, 6462477), (7, 2769633), (9, 2154159), (21, 923211), (27, 718053), (31, 625401), (63, 307737), (81, 239351), (93, 208467), (189, 102579), (217, 89343), (279, 69489), (567, 34193), (651, 29781), (837, 23163), (1103, 17577), (1953, 9927), (2511, 7721), (3309, 5859)]