639728640

素因数分解:

$2^{10}\times 3^2\times 5^1\times {\mathrm{13883}}^1$

素因数の和:13914

約数の個数: 132

約数和(自身を含む): 2216802744

約数和(自身を除く): 1577074104

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 512, 576, 640, 720, 768, 960, 1024, 1152, 1280, 1440, 1536, 1920, 2304, 2560, 2880, 3072, 3840, 4608, 5120, 5760, 7680, 9216, 11520, 13883, 15360, 23040, 27766, 41649, 46080, 55532, 69415, 83298, 111064, 124947, 138830, 166596, 208245, 222128, 249894, 277660, 333192, 416490, 444256, 499788, 555320, 624735, 666384, 832980, 888512, 999576, 1110640, 1249470, 1332768, 1665960, 1777024, 1999152, 2221280, 2498940, 2665536, 3331920, 3554048, 3998304, 4442560, 4997880, 5331072, 6663840, 7108096, 7996608, 8885120, 9995760, 10662144, 13327680, 14216192, 15993216, 17770240, 19991520, 21324288, 26655360, 31986432, 35540480, 39983040, 42648576, 53310720, 63972864, 71080960, 79966080, 106621440, 127945728, 159932160, 213242880, 319864320, 639728640]

約数ペア:

[(1, 639728640), (2, 319864320), (3, 213242880), (4, 159932160), (5, 127945728), (6, 106621440), (8, 79966080), (9, 71080960), (10, 63972864), (12, 53310720), (15, 42648576), (16, 39983040), (18, 35540480), (20, 31986432), (24, 26655360), (30, 21324288), (32, 19991520), (36, 17770240), (40, 15993216), (45, 14216192), (48, 13327680), (60, 10662144), (64, 9995760), (72, 8885120), (80, 7996608), (90, 7108096), (96, 6663840), (120, 5331072), (128, 4997880), (144, 4442560), (160, 3998304), (180, 3554048), (192, 3331920), (240, 2665536), (256, 2498940), (288, 2221280), (320, 1999152), (360, 1777024), (384, 1665960), (480, 1332768), (512, 1249470), (576, 1110640), (640, 999576), (720, 888512), (768, 832980), (960, 666384), (1024, 624735), (1152, 555320), (1280, 499788), (1440, 444256), (1536, 416490), (1920, 333192), (2304, 277660), (2560, 249894), (2880, 222128), (3072, 208245), (3840, 166596), (4608, 138830), (5120, 124947), (5760, 111064), (7680, 83298), (9216, 69415), (11520, 55532), (13883, 46080), (15360, 41649), (23040, 27766)]