20105280

素因数分解:

$2^6\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1$

素因数の和:218

約数の個数: 224

約数和(自身を含む): 76809600

約数和(自身を除く): 56704320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 32, 36, 39, 40, 45, 48, 52, 54, 60, 64, 65, 72, 78, 80, 90, 96, 104, 108, 117, 120, 130, 135, 144, 156, 160, 179, 180, 192, 195, 208, 216, 234, 240, 260, 270, 288, 312, 320, 351, 358, 360, 390, 416, 432, 468, 480, 520, 537, 540, 576, 585, 624, 702, 716, 720, 780, 832, 864, 895, 936, 960, 1040, 1074, 1080, 1170, 1248, 1404, 1432, 1440, 1560, 1611, 1728, 1755, 1790, 1872, 2080, 2148, 2160, 2327, 2340, 2496, 2685, 2808, 2864, 2880, 3120, 3222, 3510, 3580, 3744, 4160, 4296, 4320, 4654, 4680, 4833, 5370, 5616, 5728, 6240, 6444, 6981, 7020, 7160, 7488, 8055, 8592, 8640, 9308, 9360, 9666, 10740, 11232, 11456, 11635, 12480, 12888, 13962, 14040, 14320, 16110, 17184, 18616, 18720, 19332, 20943, 21480, 22464, 23270, 24165, 25776, 27924, 28080, 28640, 32220, 34368, 34905, 37232, 37440, 38664, 41886, 42960, 46540, 48330, 51552, 55848, 56160, 57280, 62829, 64440, 69810, 74464, 77328, 83772, 85920, 93080, 96660, 103104, 104715, 111696, 112320, 125658, 128880, 139620, 148928, 154656, 167544, 171840, 186160, 193320, 209430, 223392, 251316, 257760, 279240, 309312, 314145, 335088, 372320, 386640, 418860, 446784, 502632, 515520, 558480, 628290, 670176, 744640, 773280, 837720, 1005264, 1116960, 1256580, 1340352, 1546560, 1675440, 2010528, 2233920, 2513160, 3350880, 4021056, 5026320, 6701760, 10052640, 20105280]

約数ペア:

[(1, 20105280), (2, 10052640), (3, 6701760), (4, 5026320), (5, 4021056), (6, 3350880), (8, 2513160), (9, 2233920), (10, 2010528), (12, 1675440), (13, 1546560), (15, 1340352), (16, 1256580), (18, 1116960), (20, 1005264), (24, 837720), (26, 773280), (27, 744640), (30, 670176), (32, 628290), (36, 558480), (39, 515520), (40, 502632), (45, 446784), (48, 418860), (52, 386640), (54, 372320), (60, 335088), (64, 314145), (65, 309312), (72, 279240), (78, 257760), (80, 251316), (90, 223392), (96, 209430), (104, 193320), (108, 186160), (117, 171840), (120, 167544), (130, 154656), (135, 148928), (144, 139620), (156, 128880), (160, 125658), (179, 112320), (180, 111696), (192, 104715), (195, 103104), (208, 96660), (216, 93080), (234, 85920), (240, 83772), (260, 77328), (270, 74464), (288, 69810), (312, 64440), (320, 62829), (351, 57280), (358, 56160), (360, 55848), (390, 51552), (416, 48330), (432, 46540), (468, 42960), (480, 41886), (520, 38664), (537, 37440), (540, 37232), (576, 34905), (585, 34368), (624, 32220), (702, 28640), (716, 28080), (720, 27924), (780, 25776), (832, 24165), (864, 23270), (895, 22464), (936, 21480), (960, 20943), (1040, 19332), (1074, 18720), (1080, 18616), (1170, 17184), (1248, 16110), (1404, 14320), (1432, 14040), (1440, 13962), (1560, 12888), (1611, 12480), (1728, 11635), (1755, 11456), (1790, 11232), (1872, 10740), (2080, 9666), (2148, 9360), (2160, 9308), (2327, 8640), (2340, 8592), (2496, 8055), (2685, 7488), (2808, 7160), (2864, 7020), (2880, 6981), (3120, 6444), (3222, 6240), (3510, 5728), (3580, 5616), (3744, 5370), (4160, 4833), (4296, 4680), (4320, 4654)]