21025440

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:212

約数の個数: 192

約数和(自身を含む): 76446720

約数和(自身を除く): 55421280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 31, 32, 36, 40, 45, 48, 54, 60, 62, 72, 80, 90, 93, 96, 108, 120, 124, 135, 144, 155, 157, 160, 180, 186, 216, 240, 248, 270, 279, 288, 310, 314, 360, 372, 432, 465, 471, 480, 496, 540, 558, 620, 628, 720, 744, 785, 837, 864, 930, 942, 992, 1080, 1116, 1240, 1256, 1395, 1413, 1440, 1488, 1570, 1674, 1860, 1884, 2160, 2232, 2355, 2480, 2512, 2790, 2826, 2976, 3140, 3348, 3720, 3768, 4185, 4239, 4320, 4464, 4710, 4867, 4960, 5024, 5580, 5652, 6280, 6696, 7065, 7440, 7536, 8370, 8478, 8928, 9420, 9734, 11160, 11304, 12560, 13392, 14130, 14601, 14880, 15072, 16740, 16956, 18840, 19468, 21195, 22320, 22608, 24335, 25120, 26784, 28260, 29202, 33480, 33912, 37680, 38936, 42390, 43803, 44640, 45216, 48670, 56520, 58404, 66960, 67824, 73005, 75360, 77872, 84780, 87606, 97340, 113040, 116808, 131409, 133920, 135648, 146010, 155744, 169560, 175212, 194680, 219015, 226080, 233616, 262818, 292020, 339120, 350424, 389360, 438030, 467232, 525636, 584040, 657045, 678240, 700848, 778720, 876060, 1051272, 1168080, 1314090, 1401696, 1752120, 2102544, 2336160, 2628180, 3504240, 4205088, 5256360, 7008480, 10512720, 21025440]

約数ペア:

[(1, 21025440), (2, 10512720), (3, 7008480), (4, 5256360), (5, 4205088), (6, 3504240), (8, 2628180), (9, 2336160), (10, 2102544), (12, 1752120), (15, 1401696), (16, 1314090), (18, 1168080), (20, 1051272), (24, 876060), (27, 778720), (30, 700848), (31, 678240), (32, 657045), (36, 584040), (40, 525636), (45, 467232), (48, 438030), (54, 389360), (60, 350424), (62, 339120), (72, 292020), (80, 262818), (90, 233616), (93, 226080), (96, 219015), (108, 194680), (120, 175212), (124, 169560), (135, 155744), (144, 146010), (155, 135648), (157, 133920), (160, 131409), (180, 116808), (186, 113040), (216, 97340), (240, 87606), (248, 84780), (270, 77872), (279, 75360), (288, 73005), (310, 67824), (314, 66960), (360, 58404), (372, 56520), (432, 48670), (465, 45216), (471, 44640), (480, 43803), (496, 42390), (540, 38936), (558, 37680), (620, 33912), (628, 33480), (720, 29202), (744, 28260), (785, 26784), (837, 25120), (864, 24335), (930, 22608), (942, 22320), (992, 21195), (1080, 19468), (1116, 18840), (1240, 16956), (1256, 16740), (1395, 15072), (1413, 14880), (1440, 14601), (1488, 14130), (1570, 13392), (1674, 12560), (1860, 11304), (1884, 11160), (2160, 9734), (2232, 9420), (2355, 8928), (2480, 8478), (2512, 8370), (2790, 7536), (2826, 7440), (2976, 7065), (3140, 6696), (3348, 6280), (3720, 5652), (3768, 5580), (4185, 5024), (4239, 4960), (4320, 4867), (4464, 4710)]