19578320

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:228

約数の個数: 80

約数和(自身を含む): 47996928

約数和(自身を除く): 28418608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 47, 80, 82, 94, 127, 164, 188, 205, 235, 254, 328, 376, 410, 470, 508, 635, 656, 752, 820, 940, 1016, 1270, 1640, 1880, 1927, 2032, 2540, 3280, 3760, 3854, 5080, 5207, 5969, 7708, 9635, 10160, 10414, 11938, 15416, 19270, 20828, 23876, 26035, 29845, 30832, 38540, 41656, 47752, 52070, 59690, 77080, 83312, 95504, 104140, 119380, 154160, 208280, 238760, 244729, 416560, 477520, 489458, 978916, 1223645, 1957832, 2447290, 3915664, 4894580, 9789160, 19578320]

約数ペア:

[(1, 19578320), (2, 9789160), (4, 4894580), (5, 3915664), (8, 2447290), (10, 1957832), (16, 1223645), (20, 978916), (40, 489458), (41, 477520), (47, 416560), (80, 244729), (82, 238760), (94, 208280), (127, 154160), (164, 119380), (188, 104140), (205, 95504), (235, 83312), (254, 77080), (328, 59690), (376, 52070), (410, 47752), (470, 41656), (508, 38540), (635, 30832), (656, 29845), (752, 26035), (820, 23876), (940, 20828), (1016, 19270), (1270, 15416), (1640, 11938), (1880, 10414), (1927, 10160), (2032, 9635), (2540, 7708), (3280, 5969), (3760, 5207), (3854, 5080)]