19919823

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 34320384

約数和(自身を除く): 14400561

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 97, 127, 147, 231, 291, 381, 539, 679, 889, 1067, 1397, 1617, 2037, 2667, 3201, 4191, 4753, 6223, 7469, 9779, 12319, 14259, 18669, 22407, 29337, 36957, 52283, 68453, 86233, 135509, 156849, 205359, 258699, 406527, 603631, 948563, 1810893, 2845689, 6639941, 19919823]

約数ペア:

[(1, 19919823), (3, 6639941), (7, 2845689), (11, 1810893), (21, 948563), (33, 603631), (49, 406527), (77, 258699), (97, 205359), (127, 156849), (147, 135509), (231, 86233), (291, 68453), (381, 52283), (539, 36957), (679, 29337), (889, 22407), (1067, 18669), (1397, 14259), (1617, 12319), (2037, 9779), (2667, 7469), (3201, 6223), (4191, 4753)]