21085920

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{1627}}^1$

素因数の和:1654

約数の個数: 120

約数和(自身を含む): 74461464

約数和(自身を除く): 53375544

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, 1620, 1627, 2160, 2592, 3240, 3254, 4320, 4881, 6480, 6508, 8135, 9762, 12960, 13016, 14643, 16270, 19524, 24405, 26032, 29286, 32540, 39048, 43929, 48810, 52064, 58572, 65080, 73215, 78096, 87858, 97620, 117144, 130160, 131787, 146430, 156192, 175716, 195240, 219645, 234288, 260320, 263574, 292860, 351432, 390480, 439290, 468576, 527148, 585720, 658935, 702864, 780960, 878580, 1054296, 1171440, 1317870, 1405728, 1757160, 2108592, 2342880, 2635740, 3514320, 4217184, 5271480, 7028640, 10542960, 21085920]

約数ペア:

[(1, 21085920), (2, 10542960), (3, 7028640), (4, 5271480), (5, 4217184), (6, 3514320), (8, 2635740), (9, 2342880), (10, 2108592), (12, 1757160), (15, 1405728), (16, 1317870), (18, 1171440), (20, 1054296), (24, 878580), (27, 780960), (30, 702864), (32, 658935), (36, 585720), (40, 527148), (45, 468576), (48, 439290), (54, 390480), (60, 351432), (72, 292860), (80, 263574), (81, 260320), (90, 234288), (96, 219645), (108, 195240), (120, 175716), (135, 156192), (144, 146430), (160, 131787), (162, 130160), (180, 117144), (216, 97620), (240, 87858), (270, 78096), (288, 73215), (324, 65080), (360, 58572), (405, 52064), (432, 48810), (480, 43929), (540, 39048), (648, 32540), (720, 29286), (810, 26032), (864, 24405), (1080, 19524), (1296, 16270), (1440, 14643), (1620, 13016), (1627, 12960), (2160, 9762), (2592, 8135), (3240, 6508), (3254, 6480), (4320, 4881)]