20478154320

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{81031}}^1$

素因数の和:81072

約数の個数: 240

約数和(自身を含む): 76806667392

約数和(自身を除く): 56328513072

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 48, 52, 54, 60, 65, 72, 78, 80, 81, 90, 104, 108, 117, 120, 130, 135, 144, 156, 162, 180, 195, 208, 216, 234, 240, 243, 260, 270, 312, 324, 351, 360, 390, 405, 432, 468, 486, 520, 540, 585, 624, 648, 702, 720, 780, 810, 936, 972, 1040, 1053, 1080, 1170, 1215, 1296, 1404, 1560, 1620, 1755, 1872, 1944, 2106, 2160, 2340, 2430, 2808, 3120, 3159, 3240, 3510, 3888, 4212, 4680, 4860, 5265, 5616, 6318, 6480, 7020, 8424, 9360, 9720, 10530, 12636, 14040, 15795, 16848, 19440, 21060, 25272, 28080, 31590, 42120, 50544, 63180, 81031, 84240, 126360, 162062, 243093, 252720, 324124, 405155, 486186, 648248, 729279, 810310, 972372, 1053403, 1215465, 1296496, 1458558, 1620620, 1944744, 2106806, 2187837, 2430930, 2917116, 3160209, 3241240, 3646395, 3889488, 4213612, 4375674, 4861860, 5267015, 5834232, 6320418, 6482480, 6563511, 7292790, 8427224, 8751348, 9480627, 9723720, 10534030, 10939185, 11668464, 12640836, 13127022, 14585580, 15801045, 16854448, 17502696, 18961254, 19447440, 19690533, 21068060, 21878370, 25281672, 26254044, 28441881, 29171160, 31602090, 32817555, 35005392, 37922508, 39381066, 42136120, 43756740, 47403135, 50563344, 52508088, 56883762, 58342320, 63204180, 65635110, 75845016, 78762132, 84272240, 85325643, 87513480, 94806270, 98452665, 105016176, 113767524, 126408360, 131270220, 142209405, 151690032, 157524264, 170651286, 175026960, 189612540, 196905330, 227535048, 252816720, 255976929, 262540440, 284418810, 315048528, 341302572, 379225080, 393810660, 426628215, 455070096, 511953858, 525080880, 568837620, 682605144, 758450160, 787621320, 853256430, 1023907716, 1137675240, 1279884645, 1365210288, 1575242640, 1706512860, 2047815432, 2275350480, 2559769290, 3413025720, 4095630864, 5119538580, 6826051440, 10239077160, 20478154320]

約数ペア:

[(1, 20478154320), (2, 10239077160), (3, 6826051440), (4, 5119538580), (5, 4095630864), (6, 3413025720), (8, 2559769290), (9, 2275350480), (10, 2047815432), (12, 1706512860), (13, 1575242640), (15, 1365210288), (16, 1279884645), (18, 1137675240), (20, 1023907716), (24, 853256430), (26, 787621320), (27, 758450160), (30, 682605144), (36, 568837620), (39, 525080880), (40, 511953858), (45, 455070096), (48, 426628215), (52, 393810660), (54, 379225080), (60, 341302572), (65, 315048528), (72, 284418810), (78, 262540440), (80, 255976929), (81, 252816720), (90, 227535048), (104, 196905330), (108, 189612540), (117, 175026960), (120, 170651286), (130, 157524264), (135, 151690032), (144, 142209405), (156, 131270220), (162, 126408360), (180, 113767524), (195, 105016176), (208, 98452665), (216, 94806270), (234, 87513480), (240, 85325643), (243, 84272240), (260, 78762132), (270, 75845016), (312, 65635110), (324, 63204180), (351, 58342320), (360, 56883762), (390, 52508088), (405, 50563344), (432, 47403135), (468, 43756740), (486, 42136120), (520, 39381066), (540, 37922508), (585, 35005392), (624, 32817555), (648, 31602090), (702, 29171160), (720, 28441881), (780, 26254044), (810, 25281672), (936, 21878370), (972, 21068060), (1040, 19690533), (1053, 19447440), (1080, 18961254), (1170, 17502696), (1215, 16854448), (1296, 15801045), (1404, 14585580), (1560, 13127022), (1620, 12640836), (1755, 11668464), (1872, 10939185), (1944, 10534030), (2106, 9723720), (2160, 9480627), (2340, 8751348), (2430, 8427224), (2808, 7292790), (3120, 6563511), (3159, 6482480), (3240, 6320418), (3510, 5834232), (3888, 5267015), (4212, 4861860), (4680, 4375674), (4860, 4213612), (5265, 3889488), (5616, 3646395), (6318, 3241240), (6480, 3160209), (7020, 2917116), (8424, 2430930), (9360, 2187837), (9720, 2106806), (10530, 1944744), (12636, 1620620), (14040, 1458558), (15795, 1296496), (16848, 1215465), (19440, 1053403), (21060, 972372), (25272, 810310), (28080, 729279), (31590, 648248), (42120, 486186), (50544, 405155), (63180, 324124), (81031, 252720), (84240, 243093), (126360, 162062)]