20914769920

素因数分解:

$2^{12}\times 5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{353}}^1$

素因数の和:656

約数の個数: 208

約数和(自身を含む): 55115862912

約数和(自身を除く): 34201092992

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 263, 320, 352, 353, 440, 512, 526, 640, 704, 706, 880, 1024, 1052, 1280, 1315, 1408, 1412, 1760, 1765, 2048, 2104, 2560, 2630, 2816, 2824, 2893, 3520, 3530, 3883, 4096, 4208, 5120, 5260, 5632, 5648, 5786, 7040, 7060, 7766, 8416, 10240, 10520, 11264, 11296, 11572, 14080, 14120, 14465, 15532, 16832, 19415, 20480, 21040, 22528, 22592, 23144, 28160, 28240, 28930, 31064, 33664, 38830, 42080, 45056, 45184, 46288, 56320, 56480, 57860, 62128, 67328, 77660, 84160, 90368, 92576, 92839, 112640, 112960, 115720, 124256, 134656, 155320, 168320, 180736, 185152, 185678, 225280, 225920, 231440, 248512, 269312, 310640, 336640, 361472, 370304, 371356, 451840, 462880, 464195, 497024, 538624, 621280, 673280, 722944, 740608, 742712, 903680, 925760, 928390, 994048, 1021229, 1077248, 1242560, 1346560, 1445888, 1481216, 1485424, 1807360, 1851520, 1856780, 1988096, 2042458, 2485120, 2693120, 2962432, 2970848, 3614720, 3703040, 3713560, 3976192, 4084916, 4970240, 5106145, 5386240, 5924864, 5941696, 7229440, 7406080, 7427120, 7952384, 8169832, 9940480, 10212290, 11849728, 11883392, 14812160, 14854240, 15904768, 16339664, 19880960, 20424580, 23766784, 29624320, 29708480, 32679328, 39761920, 40849160, 47533568, 59248640, 59416960, 65358656, 79523840, 81698320, 95067136, 118833920, 130717312, 163396640, 190134272, 237667840, 261434624, 326793280, 380268544, 475335680, 522869248, 653586560, 950671360, 1045738496, 1307173120, 1901342720, 2091476992, 2614346240, 4182953984, 5228692480, 10457384960, 20914769920]

約数ペア:

[(1, 20914769920), (2, 10457384960), (4, 5228692480), (5, 4182953984), (8, 2614346240), (10, 2091476992), (11, 1901342720), (16, 1307173120), (20, 1045738496), (22, 950671360), (32, 653586560), (40, 522869248), (44, 475335680), (55, 380268544), (64, 326793280), (80, 261434624), (88, 237667840), (110, 190134272), (128, 163396640), (160, 130717312), (176, 118833920), (220, 95067136), (256, 81698320), (263, 79523840), (320, 65358656), (352, 59416960), (353, 59248640), (440, 47533568), (512, 40849160), (526, 39761920), (640, 32679328), (704, 29708480), (706, 29624320), (880, 23766784), (1024, 20424580), (1052, 19880960), (1280, 16339664), (1315, 15904768), (1408, 14854240), (1412, 14812160), (1760, 11883392), (1765, 11849728), (2048, 10212290), (2104, 9940480), (2560, 8169832), (2630, 7952384), (2816, 7427120), (2824, 7406080), (2893, 7229440), (3520, 5941696), (3530, 5924864), (3883, 5386240), (4096, 5106145), (4208, 4970240), (5120, 4084916), (5260, 3976192), (5632, 3713560), (5648, 3703040), (5786, 3614720), (7040, 2970848), (7060, 2962432), (7766, 2693120), (8416, 2485120), (10240, 2042458), (10520, 1988096), (11264, 1856780), (11296, 1851520), (11572, 1807360), (14080, 1485424), (14120, 1481216), (14465, 1445888), (15532, 1346560), (16832, 1242560), (19415, 1077248), (20480, 1021229), (21040, 994048), (22528, 928390), (22592, 925760), (23144, 903680), (28160, 742712), (28240, 740608), (28930, 722944), (31064, 673280), (33664, 621280), (38830, 538624), (42080, 497024), (45056, 464195), (45184, 462880), (46288, 451840), (56320, 371356), (56480, 370304), (57860, 361472), (62128, 336640), (67328, 310640), (77660, 269312), (84160, 248512), (90368, 231440), (92576, 225920), (92839, 225280), (112640, 185678), (112960, 185152), (115720, 180736), (124256, 168320), (134656, 155320)]