20725931520

素因数分解:

$2^9\times 3^2\times 5^1\times 7^1\times {\mathrm{128509}}^1$

素因数の和:128545

約数の個数: 240

約数和(自身を含む): 82034615520

約数和(自身を除く): 61308684000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 256, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 512, 560, 576, 630, 640, 672, 720, 768, 840, 896, 960, 1008, 1120, 1152, 1260, 1280, 1344, 1440, 1536, 1680, 1792, 1920, 2016, 2240, 2304, 2520, 2560, 2688, 2880, 3360, 3584, 3840, 4032, 4480, 4608, 5040, 5376, 5760, 6720, 7680, 8064, 8960, 10080, 10752, 11520, 13440, 16128, 17920, 20160, 23040, 26880, 32256, 40320, 53760, 80640, 128509, 161280, 257018, 385527, 514036, 642545, 771054, 899563, 1028072, 1156581, 1285090, 1542108, 1799126, 1927635, 2056144, 2313162, 2570180, 2698689, 3084216, 3598252, 3855270, 4112288, 4497815, 4626324, 5140360, 5397378, 5782905, 6168432, 7196504, 7710540, 8096067, 8224576, 8995630, 9252648, 10280720, 10794756, 11565810, 12336864, 13493445, 14393008, 15421080, 16192134, 16449152, 17991260, 18505296, 20561440, 21589512, 23131620, 24673728, 26986890, 28786016, 30842160, 32384268, 32898304, 35982520, 37010592, 40480335, 41122880, 43179024, 46263240, 49347456, 53973780, 57572032, 61684320, 64768536, 65796608, 71965040, 74021184, 80960670, 82245760, 86358048, 92526480, 98694912, 107947560, 115144064, 123368640, 129537072, 143930080, 148042368, 161921340, 164491520, 172716096, 185052960, 197389824, 215895120, 230288128, 246737280, 259074144, 287860160, 296084736, 323842680, 328983040, 345432192, 370105920, 431790240, 460576256, 493474560, 518148288, 575720320, 592169472, 647685360, 690864384, 740211840, 863580480, 986949120, 1036296576, 1151440640, 1295370720, 1381728768, 1480423680, 1727160960, 2072593152, 2302881280, 2590741440, 2960847360, 3454321920, 4145186304, 5181482880, 6908643840, 10362965760, 20725931520]

約数ペア:

[(1, 20725931520), (2, 10362965760), (3, 6908643840), (4, 5181482880), (5, 4145186304), (6, 3454321920), (7, 2960847360), (8, 2590741440), (9, 2302881280), (10, 2072593152), (12, 1727160960), (14, 1480423680), (15, 1381728768), (16, 1295370720), (18, 1151440640), (20, 1036296576), (21, 986949120), (24, 863580480), (28, 740211840), (30, 690864384), (32, 647685360), (35, 592169472), (36, 575720320), (40, 518148288), (42, 493474560), (45, 460576256), (48, 431790240), (56, 370105920), (60, 345432192), (63, 328983040), (64, 323842680), (70, 296084736), (72, 287860160), (80, 259074144), (84, 246737280), (90, 230288128), (96, 215895120), (105, 197389824), (112, 185052960), (120, 172716096), (126, 164491520), (128, 161921340), (140, 148042368), (144, 143930080), (160, 129537072), (168, 123368640), (180, 115144064), (192, 107947560), (210, 98694912), (224, 92526480), (240, 86358048), (252, 82245760), (256, 80960670), (280, 74021184), (288, 71965040), (315, 65796608), (320, 64768536), (336, 61684320), (360, 57572032), (384, 53973780), (420, 49347456), (448, 46263240), (480, 43179024), (504, 41122880), (512, 40480335), (560, 37010592), (576, 35982520), (630, 32898304), (640, 32384268), (672, 30842160), (720, 28786016), (768, 26986890), (840, 24673728), (896, 23131620), (960, 21589512), (1008, 20561440), (1120, 18505296), (1152, 17991260), (1260, 16449152), (1280, 16192134), (1344, 15421080), (1440, 14393008), (1536, 13493445), (1680, 12336864), (1792, 11565810), (1920, 10794756), (2016, 10280720), (2240, 9252648), (2304, 8995630), (2520, 8224576), (2560, 8096067), (2688, 7710540), (2880, 7196504), (3360, 6168432), (3584, 5782905), (3840, 5397378), (4032, 5140360), (4480, 4626324), (4608, 4497815), (5040, 4112288), (5376, 3855270), (5760, 3598252), (6720, 3084216), (7680, 2698689), (8064, 2570180), (8960, 2313162), (10080, 2056144), (10752, 1927635), (11520, 1799126), (13440, 1542108), (16128, 1285090), (17920, 1156581), (20160, 1028072), (23040, 899563), (26880, 771054), (32256, 642545), (40320, 514036), (53760, 385527), (80640, 257018), (128509, 161280)]