81646560

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{59}}^1$

素因数の和:142

約数の個数: 216

約数和(自身を含む): 292776120

約数和(自身を除く): 211129560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 32, 36, 40, 45, 48, 59, 60, 62, 72, 80, 90, 93, 96, 118, 120, 124, 144, 155, 160, 177, 180, 186, 236, 240, 248, 279, 288, 295, 310, 354, 360, 372, 465, 472, 480, 496, 531, 558, 590, 620, 708, 720, 744, 885, 930, 944, 961, 992, 1062, 1116, 1180, 1240, 1395, 1416, 1440, 1488, 1770, 1829, 1860, 1888, 1922, 2124, 2232, 2360, 2480, 2655, 2790, 2832, 2883, 2976, 3540, 3658, 3720, 3844, 4248, 4464, 4720, 4805, 4960, 5310, 5487, 5580, 5664, 5766, 7080, 7316, 7440, 7688, 8496, 8649, 8928, 9145, 9440, 9610, 10620, 10974, 11160, 11532, 14160, 14415, 14632, 14880, 15376, 16461, 16992, 17298, 18290, 19220, 21240, 21948, 22320, 23064, 27435, 28320, 28830, 29264, 30752, 32922, 34596, 36580, 38440, 42480, 43245, 43896, 44640, 46128, 54870, 56699, 57660, 58528, 65844, 69192, 73160, 76880, 82305, 84960, 86490, 87792, 92256, 109740, 113398, 115320, 131688, 138384, 146320, 153760, 164610, 170097, 172980, 175584, 219480, 226796, 230640, 263376, 276768, 283495, 292640, 329220, 340194, 345960, 438960, 453592, 461280, 510291, 526752, 566990, 658440, 680388, 691920, 850485, 877920, 907184, 1020582, 1133980, 1316880, 1360776, 1383840, 1700970, 1814368, 2041164, 2267960, 2551455, 2633760, 2721552, 3401940, 4082328, 4535920, 5102910, 5443104, 6803880, 8164656, 9071840, 10205820, 13607760, 16329312, 20411640, 27215520, 40823280, 81646560]

約数ペア:

[(1, 81646560), (2, 40823280), (3, 27215520), (4, 20411640), (5, 16329312), (6, 13607760), (8, 10205820), (9, 9071840), (10, 8164656), (12, 6803880), (15, 5443104), (16, 5102910), (18, 4535920), (20, 4082328), (24, 3401940), (30, 2721552), (31, 2633760), (32, 2551455), (36, 2267960), (40, 2041164), (45, 1814368), (48, 1700970), (59, 1383840), (60, 1360776), (62, 1316880), (72, 1133980), (80, 1020582), (90, 907184), (93, 877920), (96, 850485), (118, 691920), (120, 680388), (124, 658440), (144, 566990), (155, 526752), (160, 510291), (177, 461280), (180, 453592), (186, 438960), (236, 345960), (240, 340194), (248, 329220), (279, 292640), (288, 283495), (295, 276768), (310, 263376), (354, 230640), (360, 226796), (372, 219480), (465, 175584), (472, 172980), (480, 170097), (496, 164610), (531, 153760), (558, 146320), (590, 138384), (620, 131688), (708, 115320), (720, 113398), (744, 109740), (885, 92256), (930, 87792), (944, 86490), (961, 84960), (992, 82305), (1062, 76880), (1116, 73160), (1180, 69192), (1240, 65844), (1395, 58528), (1416, 57660), (1440, 56699), (1488, 54870), (1770, 46128), (1829, 44640), (1860, 43896), (1888, 43245), (1922, 42480), (2124, 38440), (2232, 36580), (2360, 34596), (2480, 32922), (2655, 30752), (2790, 29264), (2832, 28830), (2883, 28320), (2976, 27435), (3540, 23064), (3658, 22320), (3720, 21948), (3844, 21240), (4248, 19220), (4464, 18290), (4720, 17298), (4805, 16992), (4960, 16461), (5310, 15376), (5487, 14880), (5580, 14632), (5664, 14415), (5766, 14160), (7080, 11532), (7316, 11160), (7440, 10974), (7688, 10620), (8496, 9610), (8649, 9440), (8928, 9145)]