20554560

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:103

約数の個数: 280

約数和(自身を含む): 80031336

約数和(自身を除く): 59476776

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, 61, 64, 65, 72, 78, 80, 81, 90, 96, 104, 108, 117, 120, 122, 130, 135, 144, 156, 160, 162, 180, 183, 192, 195, 208, 216, 234, 240, 244, 260, 270, 288, 305, 312, 320, 324, 351, 360, 366, 390, 405, 416, 432, 468, 480, 488, 520, 540, 549, 576, 585, 610, 624, 648, 702, 720, 732, 780, 793, 810, 832, 864, 915, 936, 960, 976, 1040, 1053, 1080, 1098, 1170, 1220, 1248, 1296, 1404, 1440, 1464, 1560, 1586, 1620, 1647, 1728, 1755, 1830, 1872, 1952, 2080, 2106, 2160, 2196, 2340, 2379, 2440, 2496, 2592, 2745, 2808, 2880, 2928, 3120, 3172, 3240, 3294, 3510, 3660, 3744, 3904, 3965, 4160, 4212, 4320, 4392, 4680, 4758, 4880, 4941, 5184, 5265, 5490, 5616, 5856, 6240, 6344, 6480, 6588, 7020, 7137, 7320, 7488, 7930, 8235, 8424, 8640, 8784, 9360, 9516, 9760, 9882, 10530, 10980, 11232, 11712, 11895, 12480, 12688, 12960, 13176, 14040, 14274, 14640, 15860, 16470, 16848, 17568, 18720, 19032, 19520, 19764, 21060, 21411, 21960, 22464, 23790, 24705, 25376, 25920, 26352, 28080, 28548, 29280, 31720, 32940, 33696, 35136, 35685, 37440, 38064, 39528, 42120, 42822, 43920, 47580, 49410, 50752, 52704, 56160, 57096, 58560, 63440, 64233, 65880, 67392, 71370, 76128, 79056, 84240, 85644, 87840, 95160, 98820, 105408, 107055, 112320, 114192, 126880, 128466, 131760, 142740, 152256, 158112, 168480, 171288, 175680, 190320, 197640, 214110, 228384, 253760, 256932, 263520, 285480, 316224, 321165, 336960, 342576, 380640, 395280, 428220, 456768, 513864, 527040, 570960, 642330, 685152, 761280, 790560, 856440, 1027728, 1141920, 1284660, 1370304, 1581120, 1712880, 2055456, 2283840, 2569320, 3425760, 4110912, 5138640, 6851520, 10277280, 20554560]

約数ペア:

[(1, 20554560), (2, 10277280), (3, 6851520), (4, 5138640), (5, 4110912), (6, 3425760), (8, 2569320), (9, 2283840), (10, 2055456), (12, 1712880), (13, 1581120), (15, 1370304), (16, 1284660), (18, 1141920), (20, 1027728), (24, 856440), (26, 790560), (27, 761280), (30, 685152), (32, 642330), (36, 570960), (39, 527040), (40, 513864), (45, 456768), (48, 428220), (52, 395280), (54, 380640), (60, 342576), (61, 336960), (64, 321165), (65, 316224), (72, 285480), (78, 263520), (80, 256932), (81, 253760), (90, 228384), (96, 214110), (104, 197640), (108, 190320), (117, 175680), (120, 171288), (122, 168480), (130, 158112), (135, 152256), (144, 142740), (156, 131760), (160, 128466), (162, 126880), (180, 114192), (183, 112320), (192, 107055), (195, 105408), (208, 98820), (216, 95160), (234, 87840), (240, 85644), (244, 84240), (260, 79056), (270, 76128), (288, 71370), (305, 67392), (312, 65880), (320, 64233), (324, 63440), (351, 58560), (360, 57096), (366, 56160), (390, 52704), (405, 50752), (416, 49410), (432, 47580), (468, 43920), (480, 42822), (488, 42120), (520, 39528), (540, 38064), (549, 37440), (576, 35685), (585, 35136), (610, 33696), (624, 32940), (648, 31720), (702, 29280), (720, 28548), (732, 28080), (780, 26352), (793, 25920), (810, 25376), (832, 24705), (864, 23790), (915, 22464), (936, 21960), (960, 21411), (976, 21060), (1040, 19764), (1053, 19520), (1080, 19032), (1098, 18720), (1170, 17568), (1220, 16848), (1248, 16470), (1296, 15860), (1404, 14640), (1440, 14274), (1464, 14040), (1560, 13176), (1586, 12960), (1620, 12688), (1647, 12480), (1728, 11895), (1755, 11712), (1830, 11232), (1872, 10980), (1952, 10530), (2080, 9882), (2106, 9760), (2160, 9516), (2196, 9360), (2340, 8784), (2379, 8640), (2440, 8424), (2496, 8235), (2592, 7930), (2745, 7488), (2808, 7320), (2880, 7137), (2928, 7020), (3120, 6588), (3172, 6480), (3240, 6344), (3294, 6240), (3510, 5856), (3660, 5616), (3744, 5490), (3904, 5265), (3965, 5184), (4160, 4941), (4212, 4880), (4320, 4758), (4392, 4680)]