20487600

素因数分解:

$2^4\times 3^3\times 5^2\times 7^1\times {\mathrm{271}}^1$

素因数の和:305

約数の個数: 240

約数和(自身を含む): 83645440

約数和(自身を除く): 63157840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 27, 28, 30, 35, 36, 40, 42, 45, 48, 50, 54, 56, 60, 63, 70, 72, 75, 80, 84, 90, 100, 105, 108, 112, 120, 126, 135, 140, 144, 150, 168, 175, 180, 189, 200, 210, 216, 225, 240, 252, 270, 271, 280, 300, 315, 336, 350, 360, 378, 400, 420, 432, 450, 504, 525, 540, 542, 560, 600, 630, 675, 700, 720, 756, 813, 840, 900, 945, 1008, 1050, 1080, 1084, 1200, 1260, 1350, 1355, 1400, 1512, 1575, 1626, 1680, 1800, 1890, 1897, 2100, 2160, 2168, 2439, 2520, 2700, 2710, 2800, 3024, 3150, 3252, 3600, 3780, 3794, 4065, 4200, 4336, 4725, 4878, 5040, 5400, 5420, 5691, 6300, 6504, 6775, 7317, 7560, 7588, 8130, 8400, 9450, 9485, 9756, 10800, 10840, 11382, 12195, 12600, 13008, 13550, 14634, 15120, 15176, 16260, 17073, 18900, 18970, 19512, 20325, 21680, 22764, 24390, 25200, 27100, 28455, 29268, 30352, 32520, 34146, 36585, 37800, 37940, 39024, 40650, 45528, 47425, 48780, 51219, 54200, 56910, 58536, 60975, 65040, 68292, 73170, 75600, 75880, 81300, 85365, 91056, 94850, 97560, 102438, 108400, 113820, 117072, 121950, 136584, 142275, 146340, 151760, 162600, 170730, 182925, 189700, 195120, 204876, 227640, 243900, 256095, 273168, 284550, 292680, 325200, 341460, 365850, 379400, 409752, 426825, 455280, 487800, 512190, 569100, 585360, 682920, 731700, 758800, 819504, 853650, 975600, 1024380, 1138200, 1280475, 1365840, 1463400, 1707300, 2048760, 2276400, 2560950, 2926800, 3414600, 4097520, 5121900, 6829200, 10243800, 20487600]

約数ペア:

[(1, 20487600), (2, 10243800), (3, 6829200), (4, 5121900), (5, 4097520), (6, 3414600), (7, 2926800), (8, 2560950), (9, 2276400), (10, 2048760), (12, 1707300), (14, 1463400), (15, 1365840), (16, 1280475), (18, 1138200), (20, 1024380), (21, 975600), (24, 853650), (25, 819504), (27, 758800), (28, 731700), (30, 682920), (35, 585360), (36, 569100), (40, 512190), (42, 487800), (45, 455280), (48, 426825), (50, 409752), (54, 379400), (56, 365850), (60, 341460), (63, 325200), (70, 292680), (72, 284550), (75, 273168), (80, 256095), (84, 243900), (90, 227640), (100, 204876), (105, 195120), (108, 189700), (112, 182925), (120, 170730), (126, 162600), (135, 151760), (140, 146340), (144, 142275), (150, 136584), (168, 121950), (175, 117072), (180, 113820), (189, 108400), (200, 102438), (210, 97560), (216, 94850), (225, 91056), (240, 85365), (252, 81300), (270, 75880), (271, 75600), (280, 73170), (300, 68292), (315, 65040), (336, 60975), (350, 58536), (360, 56910), (378, 54200), (400, 51219), (420, 48780), (432, 47425), (450, 45528), (504, 40650), (525, 39024), (540, 37940), (542, 37800), (560, 36585), (600, 34146), (630, 32520), (675, 30352), (700, 29268), (720, 28455), (756, 27100), (813, 25200), (840, 24390), (900, 22764), (945, 21680), (1008, 20325), (1050, 19512), (1080, 18970), (1084, 18900), (1200, 17073), (1260, 16260), (1350, 15176), (1355, 15120), (1400, 14634), (1512, 13550), (1575, 13008), (1626, 12600), (1680, 12195), (1800, 11382), (1890, 10840), (1897, 10800), (2100, 9756), (2160, 9485), (2168, 9450), (2439, 8400), (2520, 8130), (2700, 7588), (2710, 7560), (2800, 7317), (3024, 6775), (3150, 6504), (3252, 6300), (3600, 5691), (3780, 5420), (3794, 5400), (4065, 5040), (4200, 4878), (4336, 4725)]