256741072

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:249

約数の個数: 160

約数和(自身を含む): 651386880

約数和(自身を除く): 394645808

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 19, 28, 34, 38, 47, 56, 68, 76, 94, 112, 119, 133, 136, 151, 152, 188, 238, 266, 272, 302, 304, 323, 329, 376, 476, 532, 604, 646, 658, 752, 799, 893, 952, 1057, 1064, 1208, 1292, 1316, 1598, 1786, 1904, 2114, 2128, 2261, 2416, 2567, 2584, 2632, 2869, 3196, 3572, 4228, 4522, 5134, 5168, 5264, 5593, 5738, 6251, 6392, 7097, 7144, 8456, 9044, 10268, 11186, 11476, 12502, 12784, 14194, 14288, 15181, 16912, 17969, 18088, 20083, 20536, 22372, 22952, 25004, 28388, 30362, 35938, 36176, 40166, 41072, 44744, 45904, 48773, 49679, 50008, 56776, 60724, 71876, 80332, 89488, 97546, 99358, 100016, 106267, 113552, 120649, 121448, 134843, 143752, 160664, 195092, 198716, 212534, 241298, 242896, 269686, 287504, 321328, 341411, 390184, 397432, 425068, 482596, 539372, 682822, 780368, 794864, 844543, 850136, 943901, 965192, 1078744, 1365644, 1689086, 1700272, 1887802, 1930384, 2157488, 2292331, 2731288, 3378172, 3775604, 4584662, 5462576, 6756344, 7551208, 9169324, 13512688, 15102416, 16046317, 18338648, 32092634, 36677296, 64185268, 128370536, 256741072]

約数ペア:

[(1, 256741072), (2, 128370536), (4, 64185268), (7, 36677296), (8, 32092634), (14, 18338648), (16, 16046317), (17, 15102416), (19, 13512688), (28, 9169324), (34, 7551208), (38, 6756344), (47, 5462576), (56, 4584662), (68, 3775604), (76, 3378172), (94, 2731288), (112, 2292331), (119, 2157488), (133, 1930384), (136, 1887802), (151, 1700272), (152, 1689086), (188, 1365644), (238, 1078744), (266, 965192), (272, 943901), (302, 850136), (304, 844543), (323, 794864), (329, 780368), (376, 682822), (476, 539372), (532, 482596), (604, 425068), (646, 397432), (658, 390184), (752, 341411), (799, 321328), (893, 287504), (952, 269686), (1057, 242896), (1064, 241298), (1208, 212534), (1292, 198716), (1316, 195092), (1598, 160664), (1786, 143752), (1904, 134843), (2114, 121448), (2128, 120649), (2261, 113552), (2416, 106267), (2567, 100016), (2584, 99358), (2632, 97546), (2869, 89488), (3196, 80332), (3572, 71876), (4228, 60724), (4522, 56776), (5134, 50008), (5168, 49679), (5264, 48773), (5593, 45904), (5738, 44744), (6251, 41072), (6392, 40166), (7097, 36176), (7144, 35938), (8456, 30362), (9044, 28388), (10268, 25004), (11186, 22952), (11476, 22372), (12502, 20536), (12784, 20083), (14194, 18088), (14288, 17969), (15181, 16912)]