20571840

素因数分解:

$2^6\times 3^3\times 5^1\times {\mathrm{2381}}^1$

素因数の和:2407

約数の個数: 112

約数和(自身を含む): 72603360

約数和(自身を除く): 52031520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 432, 480, 540, 576, 720, 864, 960, 1080, 1440, 1728, 2160, 2381, 2880, 4320, 4762, 7143, 8640, 9524, 11905, 14286, 19048, 21429, 23810, 28572, 35715, 38096, 42858, 47620, 57144, 64287, 71430, 76192, 85716, 95240, 107145, 114288, 128574, 142860, 152384, 171432, 190480, 214290, 228576, 257148, 285720, 321435, 342864, 380960, 428580, 457152, 514296, 571440, 642870, 685728, 761920, 857160, 1028592, 1142880, 1285740, 1371456, 1714320, 2057184, 2285760, 2571480, 3428640, 4114368, 5142960, 6857280, 10285920, 20571840]

約数ペア:

[(1, 20571840), (2, 10285920), (3, 6857280), (4, 5142960), (5, 4114368), (6, 3428640), (8, 2571480), (9, 2285760), (10, 2057184), (12, 1714320), (15, 1371456), (16, 1285740), (18, 1142880), (20, 1028592), (24, 857160), (27, 761920), (30, 685728), (32, 642870), (36, 571440), (40, 514296), (45, 457152), (48, 428580), (54, 380960), (60, 342864), (64, 321435), (72, 285720), (80, 257148), (90, 228576), (96, 214290), (108, 190480), (120, 171432), (135, 152384), (144, 142860), (160, 128574), (180, 114288), (192, 107145), (216, 95240), (240, 85716), (270, 76192), (288, 71430), (320, 64287), (360, 57144), (432, 47620), (480, 42858), (540, 38096), (576, 35715), (720, 28572), (864, 23810), (960, 21429), (1080, 19048), (1440, 14286), (1728, 11905), (2160, 9524), (2381, 8640), (2880, 7143), (4320, 4762)]