20748960

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{1601}}^1$

素因数の和:1628

約数の個数: 120

約数和(自身を含む): 73272276

約数和(自身を除く): 52523316

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, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 270, 288, 324, 360, 405, 432, 480, 540, 648, 720, 810, 864, 1080, 1296, 1440, 1601, 1620, 2160, 2592, 3202, 3240, 4320, 4803, 6404, 6480, 8005, 9606, 12808, 12960, 14409, 16010, 19212, 24015, 25616, 28818, 32020, 38424, 43227, 48030, 51232, 57636, 64040, 72045, 76848, 86454, 96060, 115272, 128080, 129681, 144090, 153696, 172908, 192120, 216135, 230544, 256160, 259362, 288180, 345816, 384240, 432270, 461088, 518724, 576360, 648405, 691632, 768480, 864540, 1037448, 1152720, 1296810, 1383264, 1729080, 2074896, 2305440, 2593620, 3458160, 4149792, 5187240, 6916320, 10374480, 20748960]

約数ペア:

[(1, 20748960), (2, 10374480), (3, 6916320), (4, 5187240), (5, 4149792), (6, 3458160), (8, 2593620), (9, 2305440), (10, 2074896), (12, 1729080), (15, 1383264), (16, 1296810), (18, 1152720), (20, 1037448), (24, 864540), (27, 768480), (30, 691632), (32, 648405), (36, 576360), (40, 518724), (45, 461088), (48, 432270), (54, 384240), (60, 345816), (72, 288180), (80, 259362), (81, 256160), (90, 230544), (96, 216135), (108, 192120), (120, 172908), (135, 153696), (144, 144090), (160, 129681), (162, 128080), (180, 115272), (216, 96060), (240, 86454), (270, 76848), (288, 72045), (324, 64040), (360, 57636), (405, 51232), (432, 48030), (480, 43227), (540, 38424), (648, 32020), (720, 28818), (810, 25616), (864, 24015), (1080, 19212), (1296, 16010), (1440, 14409), (1601, 12960), (1620, 12808), (2160, 9606), (2592, 8005), (3202, 6480), (3240, 6404), (4320, 4803)]