256327680

素因数分解:

$2^{14}\times 3^1\times 5^1\times 7^1\times {\mathrm{149}}^1$

素因数の和:192

約数の個数: 240

約数和(自身を含む): 943689600

約数和(自身を除く): 687361920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 149, 160, 168, 192, 210, 224, 240, 256, 280, 298, 320, 336, 384, 420, 447, 448, 480, 512, 560, 596, 640, 672, 745, 768, 840, 894, 896, 960, 1024, 1043, 1120, 1192, 1280, 1344, 1490, 1536, 1680, 1788, 1792, 1920, 2048, 2086, 2235, 2240, 2384, 2560, 2688, 2980, 3072, 3129, 3360, 3576, 3584, 3840, 4096, 4172, 4470, 4480, 4768, 5120, 5215, 5376, 5960, 6144, 6258, 6720, 7152, 7168, 7680, 8192, 8344, 8940, 8960, 9536, 10240, 10430, 10752, 11920, 12288, 12516, 13440, 14304, 14336, 15360, 15645, 16384, 16688, 17880, 17920, 19072, 20480, 20860, 21504, 23840, 24576, 25032, 26880, 28608, 28672, 30720, 31290, 33376, 35760, 35840, 38144, 40960, 41720, 43008, 47680, 49152, 50064, 53760, 57216, 57344, 61440, 62580, 66752, 71520, 71680, 76288, 81920, 83440, 86016, 95360, 100128, 107520, 114432, 114688, 122880, 125160, 133504, 143040, 143360, 152576, 166880, 172032, 190720, 200256, 215040, 228864, 245760, 250320, 267008, 286080, 286720, 305152, 333760, 344064, 381440, 400512, 430080, 457728, 500640, 534016, 572160, 573440, 610304, 667520, 762880, 801024, 860160, 915456, 1001280, 1068032, 1144320, 1220608, 1335040, 1525760, 1602048, 1720320, 1830912, 2002560, 2136064, 2288640, 2441216, 2670080, 3051520, 3204096, 3661824, 4005120, 4272128, 4577280, 5340160, 6103040, 6408192, 7323648, 8010240, 8544256, 9154560, 10680320, 12206080, 12816384, 16020480, 17088512, 18309120, 21360640, 25632768, 32040960, 36618240, 42721280, 51265536, 64081920, 85442560, 128163840, 256327680]

約数ペア:

[(1, 256327680), (2, 128163840), (3, 85442560), (4, 64081920), (5, 51265536), (6, 42721280), (7, 36618240), (8, 32040960), (10, 25632768), (12, 21360640), (14, 18309120), (15, 17088512), (16, 16020480), (20, 12816384), (21, 12206080), (24, 10680320), (28, 9154560), (30, 8544256), (32, 8010240), (35, 7323648), (40, 6408192), (42, 6103040), (48, 5340160), (56, 4577280), (60, 4272128), (64, 4005120), (70, 3661824), (80, 3204096), (84, 3051520), (96, 2670080), (105, 2441216), (112, 2288640), (120, 2136064), (128, 2002560), (140, 1830912), (149, 1720320), (160, 1602048), (168, 1525760), (192, 1335040), (210, 1220608), (224, 1144320), (240, 1068032), (256, 1001280), (280, 915456), (298, 860160), (320, 801024), (336, 762880), (384, 667520), (420, 610304), (447, 573440), (448, 572160), (480, 534016), (512, 500640), (560, 457728), (596, 430080), (640, 400512), (672, 381440), (745, 344064), (768, 333760), (840, 305152), (894, 286720), (896, 286080), (960, 267008), (1024, 250320), (1043, 245760), (1120, 228864), (1192, 215040), (1280, 200256), (1344, 190720), (1490, 172032), (1536, 166880), (1680, 152576), (1788, 143360), (1792, 143040), (1920, 133504), (2048, 125160), (2086, 122880), (2235, 114688), (2240, 114432), (2384, 107520), (2560, 100128), (2688, 95360), (2980, 86016), (3072, 83440), (3129, 81920), (3360, 76288), (3576, 71680), (3584, 71520), (3840, 66752), (4096, 62580), (4172, 61440), (4470, 57344), (4480, 57216), (4768, 53760), (5120, 50064), (5215, 49152), (5376, 47680), (5960, 43008), (6144, 41720), (6258, 40960), (6720, 38144), (7152, 35840), (7168, 35760), (7680, 33376), (8192, 31290), (8344, 30720), (8940, 28672), (8960, 28608), (9536, 26880), (10240, 25032), (10430, 24576), (10752, 23840), (11920, 21504), (12288, 20860), (12516, 20480), (13440, 19072), (14304, 17920), (14336, 17880), (15360, 16688), (15645, 16384)]