20963520

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:303

約数の個数: 168

約数和(自身を含む): 74889360

約数和(自身を除く): 53925840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 32, 36, 40, 45, 48, 58, 60, 64, 72, 80, 87, 90, 96, 116, 120, 144, 145, 160, 174, 180, 192, 232, 240, 251, 261, 288, 290, 320, 348, 360, 435, 464, 480, 502, 522, 576, 580, 696, 720, 753, 870, 928, 960, 1004, 1044, 1160, 1255, 1305, 1392, 1440, 1506, 1740, 1856, 2008, 2088, 2259, 2320, 2510, 2610, 2784, 2880, 3012, 3480, 3765, 4016, 4176, 4518, 4640, 5020, 5220, 5568, 6024, 6960, 7279, 7530, 8032, 8352, 9036, 9280, 10040, 10440, 11295, 12048, 13920, 14558, 15060, 16064, 16704, 18072, 20080, 20880, 21837, 22590, 24096, 27840, 29116, 30120, 36144, 36395, 40160, 41760, 43674, 45180, 48192, 58232, 60240, 65511, 72288, 72790, 80320, 83520, 87348, 90360, 109185, 116464, 120480, 131022, 144576, 145580, 174696, 180720, 218370, 232928, 240960, 262044, 291160, 327555, 349392, 361440, 436740, 465856, 524088, 582320, 655110, 698784, 722880, 873480, 1048176, 1164640, 1310220, 1397568, 1746960, 2096352, 2329280, 2620440, 3493920, 4192704, 5240880, 6987840, 10481760, 20963520]

約数ペア:

[(1, 20963520), (2, 10481760), (3, 6987840), (4, 5240880), (5, 4192704), (6, 3493920), (8, 2620440), (9, 2329280), (10, 2096352), (12, 1746960), (15, 1397568), (16, 1310220), (18, 1164640), (20, 1048176), (24, 873480), (29, 722880), (30, 698784), (32, 655110), (36, 582320), (40, 524088), (45, 465856), (48, 436740), (58, 361440), (60, 349392), (64, 327555), (72, 291160), (80, 262044), (87, 240960), (90, 232928), (96, 218370), (116, 180720), (120, 174696), (144, 145580), (145, 144576), (160, 131022), (174, 120480), (180, 116464), (192, 109185), (232, 90360), (240, 87348), (251, 83520), (261, 80320), (288, 72790), (290, 72288), (320, 65511), (348, 60240), (360, 58232), (435, 48192), (464, 45180), (480, 43674), (502, 41760), (522, 40160), (576, 36395), (580, 36144), (696, 30120), (720, 29116), (753, 27840), (870, 24096), (928, 22590), (960, 21837), (1004, 20880), (1044, 20080), (1160, 18072), (1255, 16704), (1305, 16064), (1392, 15060), (1440, 14558), (1506, 13920), (1740, 12048), (1856, 11295), (2008, 10440), (2088, 10040), (2259, 9280), (2320, 9036), (2510, 8352), (2610, 8032), (2784, 7530), (2880, 7279), (3012, 6960), (3480, 6024), (3765, 5568), (4016, 5220), (4176, 5020), (4518, 4640)]