81324320

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:104

約数の個数: 288

約数和(自身を含む): 260620416

約数和(自身を除く): 179296096

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 23, 28, 32, 35, 40, 41, 44, 46, 49, 55, 56, 70, 77, 80, 82, 88, 92, 98, 110, 112, 115, 140, 154, 160, 161, 164, 176, 184, 196, 205, 220, 224, 230, 245, 253, 280, 287, 308, 322, 328, 352, 368, 385, 392, 410, 440, 451, 460, 490, 506, 539, 560, 574, 616, 644, 656, 736, 770, 784, 805, 820, 880, 902, 920, 943, 980, 1012, 1078, 1120, 1127, 1148, 1232, 1265, 1288, 1312, 1435, 1540, 1568, 1610, 1640, 1760, 1771, 1804, 1840, 1886, 1960, 2009, 2024, 2156, 2254, 2255, 2296, 2464, 2530, 2576, 2695, 2870, 3080, 3157, 3220, 3280, 3542, 3608, 3680, 3772, 3920, 4018, 4048, 4312, 4508, 4510, 4592, 4715, 5060, 5152, 5390, 5635, 5740, 6160, 6314, 6440, 6560, 6601, 7084, 7216, 7544, 7840, 8036, 8096, 8624, 8855, 9016, 9020, 9184, 9430, 10045, 10120, 10373, 10780, 11270, 11480, 12320, 12397, 12628, 12880, 13202, 14168, 14432, 15088, 15785, 16072, 17248, 17710, 18032, 18040, 18860, 20090, 20240, 20746, 21560, 22099, 22540, 22960, 24794, 25256, 25760, 26404, 28336, 30176, 31570, 32144, 33005, 35420, 36064, 36080, 37720, 40180, 40480, 41492, 43120, 44198, 45080, 45920, 46207, 49588, 50512, 51865, 52808, 56672, 61985, 63140, 64288, 66010, 70840, 72160, 72611, 75440, 80360, 82984, 86240, 88396, 90160, 92414, 99176, 101024, 103730, 105616, 110495, 123970, 126280, 132020, 141680, 145222, 150880, 160720, 165968, 176792, 180320, 184828, 198352, 207460, 211232, 220990, 231035, 247940, 252560, 264040, 283360, 290444, 321440, 331936, 353584, 363055, 369656, 396704, 414920, 441980, 462070, 495880, 505120, 508277, 528080, 580888, 707168, 726110, 739312, 829840, 883960, 924140, 991760, 1016554, 1056160, 1161776, 1452220, 1478624, 1659680, 1767920, 1848280, 1983520, 2033108, 2323552, 2541385, 2904440, 3535840, 3696560, 4066216, 5082770, 5808880, 7393120, 8132432, 10165540, 11617760, 16264864, 20331080, 40662160, 81324320]

約数ペア:

[(1, 81324320), (2, 40662160), (4, 20331080), (5, 16264864), (7, 11617760), (8, 10165540), (10, 8132432), (11, 7393120), (14, 5808880), (16, 5082770), (20, 4066216), (22, 3696560), (23, 3535840), (28, 2904440), (32, 2541385), (35, 2323552), (40, 2033108), (41, 1983520), (44, 1848280), (46, 1767920), (49, 1659680), (55, 1478624), (56, 1452220), (70, 1161776), (77, 1056160), (80, 1016554), (82, 991760), (88, 924140), (92, 883960), (98, 829840), (110, 739312), (112, 726110), (115, 707168), (140, 580888), (154, 528080), (160, 508277), (161, 505120), (164, 495880), (176, 462070), (184, 441980), (196, 414920), (205, 396704), (220, 369656), (224, 363055), (230, 353584), (245, 331936), (253, 321440), (280, 290444), (287, 283360), (308, 264040), (322, 252560), (328, 247940), (352, 231035), (368, 220990), (385, 211232), (392, 207460), (410, 198352), (440, 184828), (451, 180320), (460, 176792), (490, 165968), (506, 160720), (539, 150880), (560, 145222), (574, 141680), (616, 132020), (644, 126280), (656, 123970), (736, 110495), (770, 105616), (784, 103730), (805, 101024), (820, 99176), (880, 92414), (902, 90160), (920, 88396), (943, 86240), (980, 82984), (1012, 80360), (1078, 75440), (1120, 72611), (1127, 72160), (1148, 70840), (1232, 66010), (1265, 64288), (1288, 63140), (1312, 61985), (1435, 56672), (1540, 52808), (1568, 51865), (1610, 50512), (1640, 49588), (1760, 46207), (1771, 45920), (1804, 45080), (1840, 44198), (1886, 43120), (1960, 41492), (2009, 40480), (2024, 40180), (2156, 37720), (2254, 36080), (2255, 36064), (2296, 35420), (2464, 33005), (2530, 32144), (2576, 31570), (2695, 30176), (2870, 28336), (3080, 26404), (3157, 25760), (3220, 25256), (3280, 24794), (3542, 22960), (3608, 22540), (3680, 22099), (3772, 21560), (3920, 20746), (4018, 20240), (4048, 20090), (4312, 18860), (4508, 18040), (4510, 18032), (4592, 17710), (4715, 17248), (5060, 16072), (5152, 15785), (5390, 15088), (5635, 14432), (5740, 14168), (6160, 13202), (6314, 12880), (6440, 12628), (6560, 12397), (6601, 12320), (7084, 11480), (7216, 11270), (7544, 10780), (7840, 10373), (8036, 10120), (8096, 10045), (8624, 9430), (8855, 9184), (9016, 9020)]