19779903

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 35481600

約数和(自身を除く): 15701697

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 47, 99, 109, 117, 141, 143, 297, 327, 351, 423, 429, 517, 611, 981, 1199, 1269, 1287, 1417, 1551, 1833, 2943, 3597, 3861, 4251, 4653, 5123, 5499, 6721, 10791, 12753, 13959, 15369, 15587, 16497, 20163, 32373, 38259, 46107, 46761, 56353, 60489, 66599, 138321, 140283, 169059, 181467, 199797, 420849, 507177, 599391, 732589, 1521531, 1798173, 2197767, 6593301, 19779903]

約数ペア:

[(1, 19779903), (3, 6593301), (9, 2197767), (11, 1798173), (13, 1521531), (27, 732589), (33, 599391), (39, 507177), (47, 420849), (99, 199797), (109, 181467), (117, 169059), (141, 140283), (143, 138321), (297, 66599), (327, 60489), (351, 56353), (423, 46761), (429, 46107), (517, 38259), (611, 32373), (981, 20163), (1199, 16497), (1269, 15587), (1287, 15369), (1417, 13959), (1551, 12753), (1833, 10791), (2943, 6721), (3597, 5499), (3861, 5123), (4251, 4653)]