21485520

素因数分解:

$2^4\times 3^3\times 5^1\times 7^3\times {\mathrm{29}}^1$

素因数の和:72

約数の個数: 320

約数和(自身を含む): 89280000

約数和(自身を除く): 67794480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 29, 30, 35, 36, 40, 42, 45, 48, 49, 54, 56, 58, 60, 63, 70, 72, 80, 84, 87, 90, 98, 105, 108, 112, 116, 120, 126, 135, 140, 144, 145, 147, 168, 174, 180, 189, 196, 203, 210, 216, 232, 240, 245, 252, 261, 270, 280, 290, 294, 315, 336, 343, 348, 360, 378, 392, 406, 420, 432, 435, 441, 464, 490, 504, 522, 540, 560, 580, 588, 609, 630, 686, 696, 720, 735, 756, 783, 784, 812, 840, 870, 882, 945, 980, 1008, 1015, 1029, 1044, 1080, 1160, 1176, 1218, 1260, 1305, 1323, 1372, 1392, 1421, 1470, 1512, 1566, 1624, 1680, 1715, 1740, 1764, 1827, 1890, 1960, 2030, 2058, 2088, 2160, 2205, 2320, 2352, 2436, 2520, 2610, 2646, 2744, 2842, 2940, 3024, 3045, 3087, 3132, 3248, 3430, 3480, 3528, 3654, 3780, 3915, 3920, 4060, 4116, 4176, 4263, 4410, 4872, 5040, 5145, 5220, 5292, 5481, 5488, 5684, 5880, 6090, 6174, 6264, 6615, 6860, 6960, 7056, 7105, 7308, 7560, 7830, 8120, 8232, 8526, 8820, 9135, 9261, 9744, 9947, 10290, 10440, 10584, 10962, 11368, 11760, 12180, 12348, 12528, 12789, 13230, 13720, 14210, 14616, 15120, 15435, 15660, 16240, 16464, 17052, 17640, 18270, 18522, 19894, 20580, 20880, 21168, 21315, 21924, 22736, 24360, 24696, 25578, 26460, 27405, 27440, 28420, 29232, 29841, 30870, 31320, 34104, 35280, 36540, 37044, 38367, 39788, 41160, 42630, 43848, 46305, 48720, 49392, 49735, 51156, 52920, 54810, 56840, 59682, 61740, 62640, 63945, 68208, 73080, 74088, 76734, 79576, 82320, 85260, 87696, 89523, 92610, 99470, 102312, 105840, 109620, 113680, 119364, 123480, 127890, 146160, 148176, 149205, 153468, 159152, 170520, 179046, 185220, 191835, 198940, 204624, 219240, 238728, 246960, 255780, 268569, 298410, 306936, 341040, 358092, 370440, 383670, 397880, 438480, 447615, 477456, 511560, 537138, 596820, 613872, 716184, 740880, 767340, 795760, 895230, 1023120, 1074276, 1193640, 1342845, 1432368, 1534680, 1790460, 2148552, 2387280, 2685690, 3069360, 3580920, 4297104, 5371380, 7161840, 10742760, 21485520]

約数ペア:

[(1, 21485520), (2, 10742760), (3, 7161840), (4, 5371380), (5, 4297104), (6, 3580920), (7, 3069360), (8, 2685690), (9, 2387280), (10, 2148552), (12, 1790460), (14, 1534680), (15, 1432368), (16, 1342845), (18, 1193640), (20, 1074276), (21, 1023120), (24, 895230), (27, 795760), (28, 767340), (29, 740880), (30, 716184), (35, 613872), (36, 596820), (40, 537138), (42, 511560), (45, 477456), (48, 447615), (49, 438480), (54, 397880), (56, 383670), (58, 370440), (60, 358092), (63, 341040), (70, 306936), (72, 298410), (80, 268569), (84, 255780), (87, 246960), (90, 238728), (98, 219240), (105, 204624), (108, 198940), (112, 191835), (116, 185220), (120, 179046), (126, 170520), (135, 159152), (140, 153468), (144, 149205), (145, 148176), (147, 146160), (168, 127890), (174, 123480), (180, 119364), (189, 113680), (196, 109620), (203, 105840), (210, 102312), (216, 99470), (232, 92610), (240, 89523), (245, 87696), (252, 85260), (261, 82320), (270, 79576), (280, 76734), (290, 74088), (294, 73080), (315, 68208), (336, 63945), (343, 62640), (348, 61740), (360, 59682), (378, 56840), (392, 54810), (406, 52920), (420, 51156), (432, 49735), (435, 49392), (441, 48720), (464, 46305), (490, 43848), (504, 42630), (522, 41160), (540, 39788), (560, 38367), (580, 37044), (588, 36540), (609, 35280), (630, 34104), (686, 31320), (696, 30870), (720, 29841), (735, 29232), (756, 28420), (783, 27440), (784, 27405), (812, 26460), (840, 25578), (870, 24696), (882, 24360), (945, 22736), (980, 21924), (1008, 21315), (1015, 21168), (1029, 20880), (1044, 20580), (1080, 19894), (1160, 18522), (1176, 18270), (1218, 17640), (1260, 17052), (1305, 16464), (1323, 16240), (1372, 15660), (1392, 15435), (1421, 15120), (1470, 14616), (1512, 14210), (1566, 13720), (1624, 13230), (1680, 12789), (1715, 12528), (1740, 12348), (1764, 12180), (1827, 11760), (1890, 11368), (1960, 10962), (2030, 10584), (2058, 10440), (2088, 10290), (2160, 9947), (2205, 9744), (2320, 9261), (2352, 9135), (2436, 8820), (2520, 8526), (2610, 8232), (2646, 8120), (2744, 7830), (2842, 7560), (2940, 7308), (3024, 7105), (3045, 7056), (3087, 6960), (3132, 6860), (3248, 6615), (3430, 6264), (3480, 6174), (3528, 6090), (3654, 5880), (3780, 5684), (3915, 5488), (3920, 5481), (4060, 5292), (4116, 5220), (4176, 5145), (4263, 5040), (4410, 4872)]