21795480

素因数分解:

$2^3\times 3^4\times 5^1\times 7^1\times {\mathrm{31}}^2$

素因数の和:92

約数の個数: 240

約数和(自身を含む): 86510160

約数和(自身を除く): 64714680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 31, 35, 36, 40, 42, 45, 54, 56, 60, 62, 63, 70, 72, 81, 84, 90, 93, 105, 108, 120, 124, 126, 135, 140, 155, 162, 168, 180, 186, 189, 210, 216, 217, 248, 252, 270, 279, 280, 310, 315, 324, 360, 372, 378, 405, 420, 434, 465, 504, 540, 558, 567, 620, 630, 648, 651, 744, 756, 810, 837, 840, 868, 930, 945, 961, 1080, 1085, 1116, 1134, 1240, 1260, 1302, 1395, 1512, 1620, 1674, 1736, 1860, 1890, 1922, 1953, 2170, 2232, 2268, 2511, 2520, 2604, 2790, 2835, 2883, 3240, 3255, 3348, 3720, 3780, 3844, 3906, 4185, 4340, 4536, 4805, 5022, 5208, 5580, 5670, 5766, 5859, 6510, 6696, 6727, 7560, 7688, 7812, 8370, 8649, 8680, 9610, 9765, 10044, 11160, 11340, 11532, 11718, 12555, 13020, 13454, 14415, 15624, 16740, 17298, 17577, 19220, 19530, 20088, 20181, 22680, 23064, 23436, 25110, 25947, 26040, 26908, 28830, 29295, 33480, 33635, 34596, 35154, 38440, 39060, 40362, 43245, 46872, 50220, 51894, 53816, 57660, 58590, 60543, 67270, 69192, 70308, 77841, 78120, 80724, 86490, 87885, 100440, 100905, 103788, 115320, 117180, 121086, 129735, 134540, 140616, 155682, 161448, 172980, 175770, 181629, 201810, 207576, 234360, 242172, 259470, 269080, 302715, 311364, 345960, 351540, 363258, 389205, 403620, 484344, 518940, 544887, 605430, 622728, 703080, 726516, 778410, 807240, 908145, 1037880, 1089774, 1210860, 1453032, 1556820, 1816290, 2179548, 2421720, 2724435, 3113640, 3632580, 4359096, 5448870, 7265160, 10897740, 21795480]

約数ペア:

[(1, 21795480), (2, 10897740), (3, 7265160), (4, 5448870), (5, 4359096), (6, 3632580), (7, 3113640), (8, 2724435), (9, 2421720), (10, 2179548), (12, 1816290), (14, 1556820), (15, 1453032), (18, 1210860), (20, 1089774), (21, 1037880), (24, 908145), (27, 807240), (28, 778410), (30, 726516), (31, 703080), (35, 622728), (36, 605430), (40, 544887), (42, 518940), (45, 484344), (54, 403620), (56, 389205), (60, 363258), (62, 351540), (63, 345960), (70, 311364), (72, 302715), (81, 269080), (84, 259470), (90, 242172), (93, 234360), (105, 207576), (108, 201810), (120, 181629), (124, 175770), (126, 172980), (135, 161448), (140, 155682), (155, 140616), (162, 134540), (168, 129735), (180, 121086), (186, 117180), (189, 115320), (210, 103788), (216, 100905), (217, 100440), (248, 87885), (252, 86490), (270, 80724), (279, 78120), (280, 77841), (310, 70308), (315, 69192), (324, 67270), (360, 60543), (372, 58590), (378, 57660), (405, 53816), (420, 51894), (434, 50220), (465, 46872), (504, 43245), (540, 40362), (558, 39060), (567, 38440), (620, 35154), (630, 34596), (648, 33635), (651, 33480), (744, 29295), (756, 28830), (810, 26908), (837, 26040), (840, 25947), (868, 25110), (930, 23436), (945, 23064), (961, 22680), (1080, 20181), (1085, 20088), (1116, 19530), (1134, 19220), (1240, 17577), (1260, 17298), (1302, 16740), (1395, 15624), (1512, 14415), (1620, 13454), (1674, 13020), (1736, 12555), (1860, 11718), (1890, 11532), (1922, 11340), (1953, 11160), (2170, 10044), (2232, 9765), (2268, 9610), (2511, 8680), (2520, 8649), (2604, 8370), (2790, 7812), (2835, 7688), (2883, 7560), (3240, 6727), (3255, 6696), (3348, 6510), (3720, 5859), (3780, 5766), (3844, 5670), (3906, 5580), (4185, 5208), (4340, 5022), (4536, 4805)]