256640384

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2003}}^1$

素因数の和:2048

約数の個数: 128

約数和(自身を含む): 686810880

約数和(自身を除く): 430170496

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 32, 44, 52, 56, 64, 77, 88, 91, 104, 112, 128, 143, 154, 176, 182, 208, 224, 286, 308, 352, 364, 416, 448, 572, 616, 704, 728, 832, 896, 1001, 1144, 1232, 1408, 1456, 1664, 2002, 2003, 2288, 2464, 2912, 4004, 4006, 4576, 4928, 5824, 8008, 8012, 9152, 9856, 11648, 14021, 16016, 16024, 18304, 22033, 26039, 28042, 32032, 32048, 44066, 52078, 56084, 64064, 64096, 88132, 104156, 112168, 128128, 128192, 154231, 176264, 182273, 208312, 224336, 256384, 286429, 308462, 352528, 364546, 416624, 448672, 572858, 616924, 705056, 729092, 833248, 897344, 1145716, 1233848, 1410112, 1458184, 1666496, 1794688, 2005003, 2291432, 2467696, 2820224, 2916368, 3332992, 4010006, 4582864, 4935392, 5832736, 8020012, 9165728, 9870784, 11665472, 16040024, 18331456, 19741568, 23330944, 32080048, 36662912, 64160096, 128320192, 256640384]

約数ペア:

[(1, 256640384), (2, 128320192), (4, 64160096), (7, 36662912), (8, 32080048), (11, 23330944), (13, 19741568), (14, 18331456), (16, 16040024), (22, 11665472), (26, 9870784), (28, 9165728), (32, 8020012), (44, 5832736), (52, 4935392), (56, 4582864), (64, 4010006), (77, 3332992), (88, 2916368), (91, 2820224), (104, 2467696), (112, 2291432), (128, 2005003), (143, 1794688), (154, 1666496), (176, 1458184), (182, 1410112), (208, 1233848), (224, 1145716), (286, 897344), (308, 833248), (352, 729092), (364, 705056), (416, 616924), (448, 572858), (572, 448672), (616, 416624), (704, 364546), (728, 352528), (832, 308462), (896, 286429), (1001, 256384), (1144, 224336), (1232, 208312), (1408, 182273), (1456, 176264), (1664, 154231), (2002, 128192), (2003, 128128), (2288, 112168), (2464, 104156), (2912, 88132), (4004, 64096), (4006, 64064), (4576, 56084), (4928, 52078), (5824, 44066), (8008, 32048), (8012, 32032), (9152, 28042), (9856, 26039), (11648, 22033), (14021, 18304), (16016, 16024)]