161798889

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:290

約数の個数: 64

約数和(自身を含む): 272629760

約数和(自身を除く): 110830871

約数列:

[1, 3, 7, 19, 21, 31, 57, 93, 103, 127, 133, 217, 309, 381, 399, 589, 651, 721, 889, 1767, 1957, 2163, 2413, 2667, 3193, 3937, 4123, 5871, 7239, 9579, 11811, 12369, 13081, 13699, 16891, 22351, 27559, 39243, 41097, 50673, 60667, 67053, 74803, 82677, 91567, 182001, 224409, 248539, 274701, 405511, 424669, 523621, 745617, 1216533, 1274007, 1570863, 1739773, 2838577, 5219319, 7704709, 8515731, 23114127, 53932963, 161798889]

約数ペア:

[(1, 161798889), (3, 53932963), (7, 23114127), (19, 8515731), (21, 7704709), (31, 5219319), (57, 2838577), (93, 1739773), (103, 1570863), (127, 1274007), (133, 1216533), (217, 745617), (309, 523621), (381, 424669), (399, 405511), (589, 274701), (651, 248539), (721, 224409), (889, 182001), (1767, 91567), (1957, 82677), (2163, 74803), (2413, 67053), (2667, 60667), (3193, 50673), (3937, 41097), (4123, 39243), (5871, 27559), (7239, 22351), (9579, 16891), (11811, 13699), (12369, 13081)]