19912320729

素因数分解:

$3^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1\times {\mathrm{25657}}^1$

素因数の和:25894

約数の個数: 48

約数和(自身を含む): 33472811008

約数和(自身を除く): 13560490279

約数列:

[1, 3, 7, 9, 21, 63, 97, 127, 291, 381, 679, 873, 889, 1143, 2037, 2667, 6111, 8001, 12319, 25657, 36957, 76971, 86233, 110871, 179599, 230913, 258699, 538797, 776097, 1616391, 2488729, 3258439, 7466187, 9775317, 17421103, 22398561, 22809073, 29325951, 52263309, 68427219, 156789927, 205281657, 316068583, 948205749, 2212480081, 2844617247, 6637440243, 19912320729]

約数ペア:

[(1, 19912320729), (3, 6637440243), (7, 2844617247), (9, 2212480081), (21, 948205749), (63, 316068583), (97, 205281657), (127, 156789927), (291, 68427219), (381, 52263309), (679, 29325951), (873, 22809073), (889, 22398561), (1143, 17421103), (2037, 9775317), (2667, 7466187), (6111, 3258439), (8001, 2488729), (12319, 1616391), (25657, 776097), (36957, 538797), (76971, 258699), (86233, 230913), (110871, 179599)]