20969280

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{809}}^1$

素因数の和:838

約数の個数: 140

約数和(自身を含む): 74683620

約数和(自身を除く): 53714340

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, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 192, 216, 240, 270, 288, 320, 324, 360, 405, 432, 480, 540, 576, 648, 720, 809, 810, 864, 960, 1080, 1296, 1440, 1618, 1620, 1728, 2160, 2427, 2592, 2880, 3236, 3240, 4045, 4320, 4854, 5184, 6472, 6480, 7281, 8090, 8640, 9708, 12135, 12944, 12960, 14562, 16180, 19416, 21843, 24270, 25888, 25920, 29124, 32360, 36405, 38832, 43686, 48540, 51776, 58248, 64720, 65529, 72810, 77664, 87372, 97080, 109215, 116496, 129440, 131058, 145620, 155328, 174744, 194160, 218430, 232992, 258880, 262116, 291240, 327645, 349488, 388320, 436860, 465984, 524232, 582480, 655290, 698976, 776640, 873720, 1048464, 1164960, 1310580, 1397952, 1747440, 2096928, 2329920, 2621160, 3494880, 4193856, 5242320, 6989760, 10484640, 20969280]

約数ペア:

[(1, 20969280), (2, 10484640), (3, 6989760), (4, 5242320), (5, 4193856), (6, 3494880), (8, 2621160), (9, 2329920), (10, 2096928), (12, 1747440), (15, 1397952), (16, 1310580), (18, 1164960), (20, 1048464), (24, 873720), (27, 776640), (30, 698976), (32, 655290), (36, 582480), (40, 524232), (45, 465984), (48, 436860), (54, 388320), (60, 349488), (64, 327645), (72, 291240), (80, 262116), (81, 258880), (90, 232992), (96, 218430), (108, 194160), (120, 174744), (135, 155328), (144, 145620), (160, 131058), (162, 129440), (180, 116496), (192, 109215), (216, 97080), (240, 87372), (270, 77664), (288, 72810), (320, 65529), (324, 64720), (360, 58248), (405, 51776), (432, 48540), (480, 43686), (540, 38832), (576, 36405), (648, 32360), (720, 29124), (809, 25920), (810, 25888), (864, 24270), (960, 21843), (1080, 19416), (1296, 16180), (1440, 14562), (1618, 12960), (1620, 12944), (1728, 12135), (2160, 9708), (2427, 8640), (2592, 8090), (2880, 7281), (3236, 6480), (3240, 6472), (4045, 5184), (4320, 4854)]