21172320

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1$

素因数の和:79

約数の個数: 288

約数和(自身を含む): 83008800

約数和(自身を除く): 61836480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 29, 30, 32, 36, 39, 40, 45, 48, 52, 54, 58, 60, 65, 72, 78, 80, 87, 90, 96, 104, 108, 116, 117, 120, 130, 135, 144, 145, 156, 160, 169, 174, 180, 195, 208, 216, 232, 234, 240, 260, 261, 270, 288, 290, 312, 338, 348, 351, 360, 377, 390, 416, 432, 435, 464, 468, 480, 507, 520, 522, 540, 580, 585, 624, 676, 696, 702, 720, 754, 780, 783, 845, 864, 870, 928, 936, 1014, 1040, 1044, 1080, 1131, 1160, 1170, 1248, 1305, 1352, 1392, 1404, 1440, 1508, 1521, 1560, 1566, 1690, 1740, 1755, 1872, 1885, 2028, 2080, 2088, 2160, 2262, 2320, 2340, 2535, 2610, 2704, 2784, 2808, 3016, 3042, 3120, 3132, 3380, 3393, 3480, 3510, 3744, 3770, 3915, 4056, 4176, 4320, 4524, 4563, 4640, 4680, 4901, 5070, 5220, 5408, 5616, 5655, 6032, 6084, 6240, 6264, 6760, 6786, 6960, 7020, 7540, 7605, 7830, 8112, 8352, 9048, 9126, 9360, 9802, 10140, 10179, 10440, 11232, 11310, 12064, 12168, 12528, 13520, 13572, 13920, 14040, 14703, 15080, 15210, 15660, 16224, 16965, 18096, 18252, 18720, 19604, 20280, 20358, 20880, 22620, 22815, 24336, 24505, 25056, 27040, 27144, 28080, 29406, 30160, 30420, 31320, 33930, 36192, 36504, 39208, 40560, 40716, 41760, 44109, 45240, 45630, 48672, 49010, 50895, 54288, 56160, 58812, 60320, 60840, 62640, 67860, 73008, 73515, 78416, 81120, 81432, 88218, 90480, 91260, 98020, 101790, 108576, 117624, 121680, 125280, 132327, 135720, 146016, 147030, 156832, 162864, 176436, 180960, 182520, 196040, 203580, 220545, 235248, 243360, 264654, 271440, 294060, 325728, 352872, 365040, 392080, 407160, 441090, 470496, 529308, 542880, 588120, 661635, 705744, 730080, 784160, 814320, 882180, 1058616, 1176240, 1323270, 1411488, 1628640, 1764360, 2117232, 2352480, 2646540, 3528720, 4234464, 5293080, 7057440, 10586160, 21172320]

約数ペア:

[(1, 21172320), (2, 10586160), (3, 7057440), (4, 5293080), (5, 4234464), (6, 3528720), (8, 2646540), (9, 2352480), (10, 2117232), (12, 1764360), (13, 1628640), (15, 1411488), (16, 1323270), (18, 1176240), (20, 1058616), (24, 882180), (26, 814320), (27, 784160), (29, 730080), (30, 705744), (32, 661635), (36, 588120), (39, 542880), (40, 529308), (45, 470496), (48, 441090), (52, 407160), (54, 392080), (58, 365040), (60, 352872), (65, 325728), (72, 294060), (78, 271440), (80, 264654), (87, 243360), (90, 235248), (96, 220545), (104, 203580), (108, 196040), (116, 182520), (117, 180960), (120, 176436), (130, 162864), (135, 156832), (144, 147030), (145, 146016), (156, 135720), (160, 132327), (169, 125280), (174, 121680), (180, 117624), (195, 108576), (208, 101790), (216, 98020), (232, 91260), (234, 90480), (240, 88218), (260, 81432), (261, 81120), (270, 78416), (288, 73515), (290, 73008), (312, 67860), (338, 62640), (348, 60840), (351, 60320), (360, 58812), (377, 56160), (390, 54288), (416, 50895), (432, 49010), (435, 48672), (464, 45630), (468, 45240), (480, 44109), (507, 41760), (520, 40716), (522, 40560), (540, 39208), (580, 36504), (585, 36192), (624, 33930), (676, 31320), (696, 30420), (702, 30160), (720, 29406), (754, 28080), (780, 27144), (783, 27040), (845, 25056), (864, 24505), (870, 24336), (928, 22815), (936, 22620), (1014, 20880), (1040, 20358), (1044, 20280), (1080, 19604), (1131, 18720), (1160, 18252), (1170, 18096), (1248, 16965), (1305, 16224), (1352, 15660), (1392, 15210), (1404, 15080), (1440, 14703), (1508, 14040), (1521, 13920), (1560, 13572), (1566, 13520), (1690, 12528), (1740, 12168), (1755, 12064), (1872, 11310), (1885, 11232), (2028, 10440), (2080, 10179), (2088, 10140), (2160, 9802), (2262, 9360), (2320, 9126), (2340, 9048), (2535, 8352), (2610, 8112), (2704, 7830), (2784, 7605), (2808, 7540), (3016, 7020), (3042, 6960), (3120, 6786), (3132, 6760), (3380, 6264), (3393, 6240), (3480, 6084), (3510, 6032), (3744, 5655), (3770, 5616), (3915, 5408), (4056, 5220), (4176, 5070), (4320, 4901), (4524, 4680), (4563, 4640)]