256790016

素因数分解:

$2^9\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1$

素因数の和:469

約数の個数: 240

約数和(自身を含む): 893692800

約数和(自身を除く): 636902784

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 19, 21, 24, 28, 32, 36, 38, 42, 48, 56, 57, 63, 64, 72, 76, 84, 96, 112, 114, 126, 128, 133, 144, 152, 168, 171, 192, 224, 228, 252, 256, 266, 288, 304, 336, 342, 384, 399, 419, 448, 456, 504, 512, 532, 576, 608, 672, 684, 768, 798, 838, 896, 912, 1008, 1064, 1152, 1197, 1216, 1257, 1344, 1368, 1536, 1596, 1676, 1792, 1824, 2016, 2128, 2304, 2394, 2432, 2514, 2688, 2736, 2933, 3192, 3352, 3584, 3648, 3771, 4032, 4256, 4608, 4788, 4864, 5028, 5376, 5472, 5866, 6384, 6704, 7296, 7542, 7961, 8064, 8512, 8799, 9576, 9728, 10056, 10752, 10944, 11732, 12768, 13408, 14592, 15084, 15922, 16128, 17024, 17598, 19152, 20112, 21888, 23464, 23883, 25536, 26397, 26816, 29184, 30168, 31844, 32256, 34048, 35196, 38304, 40224, 43776, 46928, 47766, 51072, 52794, 53632, 55727, 60336, 63688, 68096, 70392, 71649, 76608, 80448, 87552, 93856, 95532, 102144, 105588, 107264, 111454, 120672, 127376, 140784, 143298, 153216, 160896, 167181, 187712, 191064, 204288, 211176, 214528, 222908, 241344, 254752, 281568, 286596, 306432, 321792, 334362, 375424, 382128, 422352, 445816, 482688, 501543, 509504, 563136, 573192, 612864, 643584, 668724, 750848, 764256, 844704, 891632, 965376, 1003086, 1019008, 1126272, 1146384, 1337448, 1501696, 1528512, 1689408, 1783264, 1930752, 2006172, 2038016, 2252544, 2292768, 2674896, 3057024, 3378816, 3566528, 4012344, 4076032, 4505088, 4585536, 5349792, 6114048, 6757632, 7133056, 8024688, 9171072, 10699584, 12228096, 13515264, 14266112, 16049376, 18342144, 21399168, 28532224, 32098752, 36684288, 42798336, 64197504, 85596672, 128395008, 256790016]

約数ペア:

[(1, 256790016), (2, 128395008), (3, 85596672), (4, 64197504), (6, 42798336), (7, 36684288), (8, 32098752), (9, 28532224), (12, 21399168), (14, 18342144), (16, 16049376), (18, 14266112), (19, 13515264), (21, 12228096), (24, 10699584), (28, 9171072), (32, 8024688), (36, 7133056), (38, 6757632), (42, 6114048), (48, 5349792), (56, 4585536), (57, 4505088), (63, 4076032), (64, 4012344), (72, 3566528), (76, 3378816), (84, 3057024), (96, 2674896), (112, 2292768), (114, 2252544), (126, 2038016), (128, 2006172), (133, 1930752), (144, 1783264), (152, 1689408), (168, 1528512), (171, 1501696), (192, 1337448), (224, 1146384), (228, 1126272), (252, 1019008), (256, 1003086), (266, 965376), (288, 891632), (304, 844704), (336, 764256), (342, 750848), (384, 668724), (399, 643584), (419, 612864), (448, 573192), (456, 563136), (504, 509504), (512, 501543), (532, 482688), (576, 445816), (608, 422352), (672, 382128), (684, 375424), (768, 334362), (798, 321792), (838, 306432), (896, 286596), (912, 281568), (1008, 254752), (1064, 241344), (1152, 222908), (1197, 214528), (1216, 211176), (1257, 204288), (1344, 191064), (1368, 187712), (1536, 167181), (1596, 160896), (1676, 153216), (1792, 143298), (1824, 140784), (2016, 127376), (2128, 120672), (2304, 111454), (2394, 107264), (2432, 105588), (2514, 102144), (2688, 95532), (2736, 93856), (2933, 87552), (3192, 80448), (3352, 76608), (3584, 71649), (3648, 70392), (3771, 68096), (4032, 63688), (4256, 60336), (4608, 55727), (4788, 53632), (4864, 52794), (5028, 51072), (5376, 47766), (5472, 46928), (5866, 43776), (6384, 40224), (6704, 38304), (7296, 35196), (7542, 34048), (7961, 32256), (8064, 31844), (8512, 30168), (8799, 29184), (9576, 26816), (9728, 26397), (10056, 25536), (10752, 23883), (10944, 23464), (11732, 21888), (12768, 20112), (13408, 19152), (14592, 17598), (15084, 17024), (15922, 16128)]