256725504

素因数分解:

$2^9\times 3^3\times 7^2\times {\mathrm{379}}^1$

素因数の和:420

約数の個数: 240

約数和(自身を含む): 886327200

約数和(自身を除く): 629601696

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 49, 54, 56, 63, 64, 72, 84, 96, 98, 108, 112, 126, 128, 144, 147, 168, 189, 192, 196, 216, 224, 252, 256, 288, 294, 336, 378, 379, 384, 392, 432, 441, 448, 504, 512, 576, 588, 672, 756, 758, 768, 784, 864, 882, 896, 1008, 1137, 1152, 1176, 1323, 1344, 1512, 1516, 1536, 1568, 1728, 1764, 1792, 2016, 2274, 2304, 2352, 2646, 2653, 2688, 3024, 3032, 3136, 3411, 3456, 3528, 3584, 4032, 4548, 4608, 4704, 5292, 5306, 5376, 6048, 6064, 6272, 6822, 6912, 7056, 7959, 8064, 9096, 9408, 10233, 10584, 10612, 10752, 12096, 12128, 12544, 13644, 13824, 14112, 15918, 16128, 18192, 18571, 18816, 20466, 21168, 21224, 23877, 24192, 24256, 25088, 27288, 28224, 31836, 32256, 36384, 37142, 37632, 40932, 42336, 42448, 47754, 48384, 48512, 54576, 55713, 56448, 63672, 71631, 72768, 74284, 75264, 81864, 84672, 84896, 95508, 96768, 97024, 109152, 111426, 112896, 127344, 143262, 145536, 148568, 163728, 167139, 169344, 169792, 191016, 194048, 218304, 222852, 225792, 254688, 286524, 291072, 297136, 327456, 334278, 338688, 339584, 382032, 436608, 445704, 501417, 509376, 573048, 582144, 594272, 654912, 668556, 677376, 679168, 764064, 873216, 891408, 1002834, 1018752, 1146096, 1188544, 1309824, 1337112, 1358336, 1528128, 1746432, 1782816, 2005668, 2037504, 2292192, 2377088, 2619648, 2674224, 3056256, 3565632, 4011336, 4075008, 4584384, 4754176, 5239296, 5348448, 6112512, 7131264, 8022672, 9168768, 9508352, 10696896, 12225024, 14262528, 16045344, 18337536, 21393792, 28525056, 32090688, 36675072, 42787584, 64181376, 85575168, 128362752, 256725504]

約数ペア:

[(1, 256725504), (2, 128362752), (3, 85575168), (4, 64181376), (6, 42787584), (7, 36675072), (8, 32090688), (9, 28525056), (12, 21393792), (14, 18337536), (16, 16045344), (18, 14262528), (21, 12225024), (24, 10696896), (27, 9508352), (28, 9168768), (32, 8022672), (36, 7131264), (42, 6112512), (48, 5348448), (49, 5239296), (54, 4754176), (56, 4584384), (63, 4075008), (64, 4011336), (72, 3565632), (84, 3056256), (96, 2674224), (98, 2619648), (108, 2377088), (112, 2292192), (126, 2037504), (128, 2005668), (144, 1782816), (147, 1746432), (168, 1528128), (189, 1358336), (192, 1337112), (196, 1309824), (216, 1188544), (224, 1146096), (252, 1018752), (256, 1002834), (288, 891408), (294, 873216), (336, 764064), (378, 679168), (379, 677376), (384, 668556), (392, 654912), (432, 594272), (441, 582144), (448, 573048), (504, 509376), (512, 501417), (576, 445704), (588, 436608), (672, 382032), (756, 339584), (758, 338688), (768, 334278), (784, 327456), (864, 297136), (882, 291072), (896, 286524), (1008, 254688), (1137, 225792), (1152, 222852), (1176, 218304), (1323, 194048), (1344, 191016), (1512, 169792), (1516, 169344), (1536, 167139), (1568, 163728), (1728, 148568), (1764, 145536), (1792, 143262), (2016, 127344), (2274, 112896), (2304, 111426), (2352, 109152), (2646, 97024), (2653, 96768), (2688, 95508), (3024, 84896), (3032, 84672), (3136, 81864), (3411, 75264), (3456, 74284), (3528, 72768), (3584, 71631), (4032, 63672), (4548, 56448), (4608, 55713), (4704, 54576), (5292, 48512), (5306, 48384), (5376, 47754), (6048, 42448), (6064, 42336), (6272, 40932), (6822, 37632), (6912, 37142), (7056, 36384), (7959, 32256), (8064, 31836), (9096, 28224), (9408, 27288), (10233, 25088), (10584, 24256), (10612, 24192), (10752, 23877), (12096, 21224), (12128, 21168), (12544, 20466), (13644, 18816), (13824, 18571), (14112, 18192), (15918, 16128)]