20852640

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{1609}}^1$

素因数の和:1636

約数の個数: 120

約数和(自身を含む): 73638180

約数和(自身を除く): 52785540

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, 1609, 1620, 2160, 2592, 3218, 3240, 4320, 4827, 6436, 6480, 8045, 9654, 12872, 12960, 14481, 16090, 19308, 24135, 25744, 28962, 32180, 38616, 43443, 48270, 51488, 57924, 64360, 72405, 77232, 86886, 96540, 115848, 128720, 130329, 144810, 154464, 173772, 193080, 217215, 231696, 257440, 260658, 289620, 347544, 386160, 434430, 463392, 521316, 579240, 651645, 695088, 772320, 868860, 1042632, 1158480, 1303290, 1390176, 1737720, 2085264, 2316960, 2606580, 3475440, 4170528, 5213160, 6950880, 10426320, 20852640]

約数ペア:

[(1, 20852640), (2, 10426320), (3, 6950880), (4, 5213160), (5, 4170528), (6, 3475440), (8, 2606580), (9, 2316960), (10, 2085264), (12, 1737720), (15, 1390176), (16, 1303290), (18, 1158480), (20, 1042632), (24, 868860), (27, 772320), (30, 695088), (32, 651645), (36, 579240), (40, 521316), (45, 463392), (48, 434430), (54, 386160), (60, 347544), (72, 289620), (80, 260658), (81, 257440), (90, 231696), (96, 217215), (108, 193080), (120, 173772), (135, 154464), (144, 144810), (160, 130329), (162, 128720), (180, 115848), (216, 96540), (240, 86886), (270, 77232), (288, 72405), (324, 64360), (360, 57924), (405, 51488), (432, 48270), (480, 43443), (540, 38616), (648, 32180), (720, 28962), (810, 25744), (864, 24135), (1080, 19308), (1296, 16090), (1440, 14481), (1609, 12960), (1620, 12872), (2160, 9654), (2592, 8045), (3218, 6480), (3240, 6436), (4320, 4827)]