21120120

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1$

素因数の和:87

約数の個数: 288

約数和(自身を含む): 86205600

約数和(自身を除く): 65085480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 24, 28, 29, 30, 34, 35, 36, 40, 42, 45, 51, 56, 58, 60, 63, 68, 70, 72, 84, 85, 87, 90, 102, 105, 116, 119, 120, 126, 136, 140, 145, 153, 168, 170, 174, 180, 203, 204, 210, 232, 238, 252, 255, 261, 280, 289, 290, 306, 315, 340, 348, 357, 360, 406, 408, 420, 435, 476, 493, 504, 510, 522, 578, 580, 595, 609, 612, 630, 680, 696, 714, 765, 812, 840, 867, 870, 952, 986, 1015, 1020, 1044, 1071, 1156, 1160, 1190, 1218, 1224, 1260, 1305, 1428, 1445, 1479, 1530, 1624, 1734, 1740, 1785, 1827, 1972, 2023, 2030, 2040, 2088, 2142, 2312, 2380, 2436, 2465, 2520, 2601, 2610, 2856, 2890, 2958, 3045, 3060, 3451, 3468, 3480, 3570, 3654, 3944, 4046, 4060, 4284, 4335, 4437, 4760, 4872, 4930, 5202, 5220, 5355, 5780, 5916, 6069, 6090, 6120, 6902, 6936, 7140, 7308, 7395, 8092, 8120, 8381, 8568, 8670, 8874, 9135, 9860, 10115, 10353, 10404, 10440, 10710, 11560, 11832, 12138, 12180, 13005, 13804, 14280, 14616, 14790, 16184, 16762, 17255, 17340, 17748, 18207, 18270, 19720, 20230, 20706, 20808, 21420, 22185, 24276, 24360, 25143, 26010, 27608, 29580, 30345, 31059, 33524, 34510, 34680, 35496, 36414, 36540, 40460, 41412, 41905, 42840, 44370, 48552, 50286, 51765, 52020, 58667, 59160, 60690, 62118, 67048, 69020, 72828, 73080, 75429, 80920, 82824, 83810, 88740, 91035, 100572, 103530, 104040, 117334, 121380, 124236, 125715, 138040, 145656, 150858, 155295, 167620, 176001, 177480, 182070, 201144, 207060, 234668, 242760, 248472, 251430, 293335, 301716, 310590, 335240, 352002, 364140, 377145, 414120, 469336, 502860, 528003, 586670, 603432, 621180, 704004, 728280, 754290, 880005, 1005720, 1056006, 1173340, 1242360, 1408008, 1508580, 1760010, 2112012, 2346680, 2640015, 3017160, 3520020, 4224024, 5280030, 7040040, 10560060, 21120120]

約数ペア:

[(1, 21120120), (2, 10560060), (3, 7040040), (4, 5280030), (5, 4224024), (6, 3520020), (7, 3017160), (8, 2640015), (9, 2346680), (10, 2112012), (12, 1760010), (14, 1508580), (15, 1408008), (17, 1242360), (18, 1173340), (20, 1056006), (21, 1005720), (24, 880005), (28, 754290), (29, 728280), (30, 704004), (34, 621180), (35, 603432), (36, 586670), (40, 528003), (42, 502860), (45, 469336), (51, 414120), (56, 377145), (58, 364140), (60, 352002), (63, 335240), (68, 310590), (70, 301716), (72, 293335), (84, 251430), (85, 248472), (87, 242760), (90, 234668), (102, 207060), (105, 201144), (116, 182070), (119, 177480), (120, 176001), (126, 167620), (136, 155295), (140, 150858), (145, 145656), (153, 138040), (168, 125715), (170, 124236), (174, 121380), (180, 117334), (203, 104040), (204, 103530), (210, 100572), (232, 91035), (238, 88740), (252, 83810), (255, 82824), (261, 80920), (280, 75429), (289, 73080), (290, 72828), (306, 69020), (315, 67048), (340, 62118), (348, 60690), (357, 59160), (360, 58667), (406, 52020), (408, 51765), (420, 50286), (435, 48552), (476, 44370), (493, 42840), (504, 41905), (510, 41412), (522, 40460), (578, 36540), (580, 36414), (595, 35496), (609, 34680), (612, 34510), (630, 33524), (680, 31059), (696, 30345), (714, 29580), (765, 27608), (812, 26010), (840, 25143), (867, 24360), (870, 24276), (952, 22185), (986, 21420), (1015, 20808), (1020, 20706), (1044, 20230), (1071, 19720), (1156, 18270), (1160, 18207), (1190, 17748), (1218, 17340), (1224, 17255), (1260, 16762), (1305, 16184), (1428, 14790), (1445, 14616), (1479, 14280), (1530, 13804), (1624, 13005), (1734, 12180), (1740, 12138), (1785, 11832), (1827, 11560), (1972, 10710), (2023, 10440), (2030, 10404), (2040, 10353), (2088, 10115), (2142, 9860), (2312, 9135), (2380, 8874), (2436, 8670), (2465, 8568), (2520, 8381), (2601, 8120), (2610, 8092), (2856, 7395), (2890, 7308), (2958, 7140), (3045, 6936), (3060, 6902), (3451, 6120), (3468, 6090), (3480, 6069), (3570, 5916), (3654, 5780), (3944, 5355), (4046, 5220), (4060, 5202), (4284, 4930), (4335, 4872), (4437, 4760)]