20506500

素因数分解:

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

素因数の和:73

約数の個数: 288

約数和(自身を含む): 79672320

約数和(自身を除く): 59165820

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 27, 28, 30, 31, 35, 36, 42, 45, 49, 50, 54, 60, 62, 63, 70, 75, 84, 90, 93, 98, 100, 105, 108, 124, 125, 126, 135, 140, 147, 150, 155, 175, 180, 186, 189, 196, 210, 217, 225, 245, 250, 252, 270, 279, 294, 300, 310, 315, 350, 372, 375, 378, 420, 434, 441, 450, 465, 490, 500, 525, 540, 558, 588, 620, 630, 651, 675, 700, 735, 750, 756, 775, 837, 868, 875, 882, 900, 930, 945, 980, 1050, 1085, 1116, 1125, 1225, 1260, 1302, 1323, 1350, 1395, 1470, 1500, 1519, 1550, 1575, 1674, 1750, 1764, 1860, 1890, 1953, 2100, 2170, 2205, 2250, 2325, 2450, 2604, 2625, 2646, 2700, 2790, 2940, 3038, 3100, 3150, 3255, 3348, 3375, 3500, 3675, 3780, 3875, 3906, 4185, 4340, 4410, 4500, 4557, 4650, 4725, 4900, 5250, 5292, 5425, 5580, 5859, 6076, 6125, 6300, 6510, 6615, 6750, 6975, 7350, 7595, 7750, 7812, 7875, 8370, 8820, 9114, 9300, 9450, 9765, 10500, 10850, 11025, 11625, 11718, 12250, 13020, 13230, 13500, 13671, 13950, 14700, 15190, 15500, 15750, 16275, 16740, 18228, 18375, 18900, 19530, 20925, 21700, 22050, 22785, 23250, 23436, 23625, 24500, 26460, 27125, 27342, 27900, 29295, 30380, 31500, 32550, 33075, 34875, 36750, 37975, 39060, 41013, 41850, 44100, 45570, 46500, 47250, 48825, 54250, 54684, 55125, 58590, 65100, 66150, 68355, 69750, 73500, 75950, 81375, 82026, 83700, 91140, 94500, 97650, 104625, 108500, 110250, 113925, 117180, 132300, 136710, 139500, 146475, 151900, 162750, 164052, 165375, 189875, 195300, 205065, 209250, 220500, 227850, 244125, 273420, 292950, 325500, 330750, 341775, 379750, 410130, 418500, 455700, 488250, 569625, 585900, 661500, 683550, 732375, 759500, 820260, 976500, 1025325, 1139250, 1367100, 1464750, 1708875, 2050650, 2278500, 2929500, 3417750, 4101300, 5126625, 6835500, 10253250, 20506500]

約数ペア:

[(1, 20506500), (2, 10253250), (3, 6835500), (4, 5126625), (5, 4101300), (6, 3417750), (7, 2929500), (9, 2278500), (10, 2050650), (12, 1708875), (14, 1464750), (15, 1367100), (18, 1139250), (20, 1025325), (21, 976500), (25, 820260), (27, 759500), (28, 732375), (30, 683550), (31, 661500), (35, 585900), (36, 569625), (42, 488250), (45, 455700), (49, 418500), (50, 410130), (54, 379750), (60, 341775), (62, 330750), (63, 325500), (70, 292950), (75, 273420), (84, 244125), (90, 227850), (93, 220500), (98, 209250), (100, 205065), (105, 195300), (108, 189875), (124, 165375), (125, 164052), (126, 162750), (135, 151900), (140, 146475), (147, 139500), (150, 136710), (155, 132300), (175, 117180), (180, 113925), (186, 110250), (189, 108500), (196, 104625), (210, 97650), (217, 94500), (225, 91140), (245, 83700), (250, 82026), (252, 81375), (270, 75950), (279, 73500), (294, 69750), (300, 68355), (310, 66150), (315, 65100), (350, 58590), (372, 55125), (375, 54684), (378, 54250), (420, 48825), (434, 47250), (441, 46500), (450, 45570), (465, 44100), (490, 41850), (500, 41013), (525, 39060), (540, 37975), (558, 36750), (588, 34875), (620, 33075), (630, 32550), (651, 31500), (675, 30380), (700, 29295), (735, 27900), (750, 27342), (756, 27125), (775, 26460), (837, 24500), (868, 23625), (875, 23436), (882, 23250), (900, 22785), (930, 22050), (945, 21700), (980, 20925), (1050, 19530), (1085, 18900), (1116, 18375), (1125, 18228), (1225, 16740), (1260, 16275), (1302, 15750), (1323, 15500), (1350, 15190), (1395, 14700), (1470, 13950), (1500, 13671), (1519, 13500), (1550, 13230), (1575, 13020), (1674, 12250), (1750, 11718), (1764, 11625), (1860, 11025), (1890, 10850), (1953, 10500), (2100, 9765), (2170, 9450), (2205, 9300), (2250, 9114), (2325, 8820), (2450, 8370), (2604, 7875), (2625, 7812), (2646, 7750), (2700, 7595), (2790, 7350), (2940, 6975), (3038, 6750), (3100, 6615), (3150, 6510), (3255, 6300), (3348, 6125), (3375, 6076), (3500, 5859), (3675, 5580), (3780, 5425), (3875, 5292), (3906, 5250), (4185, 4900), (4340, 4725), (4410, 4650), (4500, 4557)]