256788480

素因数分解:

$2^{11}\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1$

素因数の和:686

約数の個数: 192

約数和(自身を含む): 886092480

約数和(自身を除く): 629304000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 256, 260, 312, 320, 384, 390, 416, 480, 512, 520, 624, 640, 643, 768, 780, 832, 960, 1024, 1040, 1248, 1280, 1286, 1536, 1560, 1664, 1920, 1929, 2048, 2080, 2496, 2560, 2572, 3072, 3120, 3215, 3328, 3840, 3858, 4160, 4992, 5120, 5144, 6144, 6240, 6430, 6656, 7680, 7716, 8320, 8359, 9645, 9984, 10240, 10288, 12480, 12860, 13312, 15360, 15432, 16640, 16718, 19290, 19968, 20576, 24960, 25077, 25720, 26624, 30720, 30864, 33280, 33436, 38580, 39936, 41152, 41795, 49920, 50154, 51440, 61728, 66560, 66872, 77160, 79872, 82304, 83590, 99840, 100308, 102880, 123456, 125385, 133120, 133744, 154320, 164608, 167180, 199680, 200616, 205760, 246912, 250770, 267488, 308640, 329216, 334360, 399360, 401232, 411520, 493824, 501540, 534976, 617280, 658432, 668720, 802464, 823040, 987648, 1003080, 1069952, 1234560, 1316864, 1337440, 1604928, 1646080, 1975296, 2006160, 2139904, 2469120, 2674880, 3209856, 3292160, 3950592, 4012320, 4279808, 4938240, 5349760, 6419712, 6584320, 8024640, 8559616, 9876480, 10699520, 12839424, 16049280, 17119232, 19752960, 21399040, 25678848, 32098560, 42798080, 51357696, 64197120, 85596160, 128394240, 256788480]

約数ペア:

[(1, 256788480), (2, 128394240), (3, 85596160), (4, 64197120), (5, 51357696), (6, 42798080), (8, 32098560), (10, 25678848), (12, 21399040), (13, 19752960), (15, 17119232), (16, 16049280), (20, 12839424), (24, 10699520), (26, 9876480), (30, 8559616), (32, 8024640), (39, 6584320), (40, 6419712), (48, 5349760), (52, 4938240), (60, 4279808), (64, 4012320), (65, 3950592), (78, 3292160), (80, 3209856), (96, 2674880), (104, 2469120), (120, 2139904), (128, 2006160), (130, 1975296), (156, 1646080), (160, 1604928), (192, 1337440), (195, 1316864), (208, 1234560), (240, 1069952), (256, 1003080), (260, 987648), (312, 823040), (320, 802464), (384, 668720), (390, 658432), (416, 617280), (480, 534976), (512, 501540), (520, 493824), (624, 411520), (640, 401232), (643, 399360), (768, 334360), (780, 329216), (832, 308640), (960, 267488), (1024, 250770), (1040, 246912), (1248, 205760), (1280, 200616), (1286, 199680), (1536, 167180), (1560, 164608), (1664, 154320), (1920, 133744), (1929, 133120), (2048, 125385), (2080, 123456), (2496, 102880), (2560, 100308), (2572, 99840), (3072, 83590), (3120, 82304), (3215, 79872), (3328, 77160), (3840, 66872), (3858, 66560), (4160, 61728), (4992, 51440), (5120, 50154), (5144, 49920), (6144, 41795), (6240, 41152), (6430, 39936), (6656, 38580), (7680, 33436), (7716, 33280), (8320, 30864), (8359, 30720), (9645, 26624), (9984, 25720), (10240, 25077), (10288, 24960), (12480, 20576), (12860, 19968), (13312, 19290), (15360, 16718), (15432, 16640)]