20463840

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{1579}}^1$

素因数の和:1606

約数の個数: 120

約数和(自身を含む): 72266040

約数和(自身を除く): 51802200

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, 1579, 1620, 2160, 2592, 3158, 3240, 4320, 4737, 6316, 6480, 7895, 9474, 12632, 12960, 14211, 15790, 18948, 23685, 25264, 28422, 31580, 37896, 42633, 47370, 50528, 56844, 63160, 71055, 75792, 85266, 94740, 113688, 126320, 127899, 142110, 151584, 170532, 189480, 213165, 227376, 252640, 255798, 284220, 341064, 378960, 426330, 454752, 511596, 568440, 639495, 682128, 757920, 852660, 1023192, 1136880, 1278990, 1364256, 1705320, 2046384, 2273760, 2557980, 3410640, 4092768, 5115960, 6821280, 10231920, 20463840]

約数ペア:

[(1, 20463840), (2, 10231920), (3, 6821280), (4, 5115960), (5, 4092768), (6, 3410640), (8, 2557980), (9, 2273760), (10, 2046384), (12, 1705320), (15, 1364256), (16, 1278990), (18, 1136880), (20, 1023192), (24, 852660), (27, 757920), (30, 682128), (32, 639495), (36, 568440), (40, 511596), (45, 454752), (48, 426330), (54, 378960), (60, 341064), (72, 284220), (80, 255798), (81, 252640), (90, 227376), (96, 213165), (108, 189480), (120, 170532), (135, 151584), (144, 142110), (160, 127899), (162, 126320), (180, 113688), (216, 94740), (240, 85266), (270, 75792), (288, 71055), (324, 63160), (360, 56844), (405, 50528), (432, 47370), (480, 42633), (540, 37896), (648, 31580), (720, 28422), (810, 25264), (864, 23685), (1080, 18948), (1296, 15790), (1440, 14211), (1579, 12960), (1620, 12632), (2160, 9474), (2592, 7895), (3158, 6480), (3240, 6316), (4320, 4737)]