28286720

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1$

素因数の和:87

約数の個数: 216

約数和(自身を含む): 88080048

約数和(自身を除く): 59793328

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 41, 44, 49, 55, 56, 64, 70, 77, 80, 82, 88, 98, 110, 112, 128, 140, 154, 160, 164, 176, 196, 205, 220, 224, 245, 256, 280, 287, 308, 320, 328, 352, 385, 392, 410, 440, 448, 451, 490, 539, 560, 574, 616, 640, 656, 704, 770, 784, 820, 880, 896, 902, 980, 1078, 1120, 1148, 1232, 1280, 1312, 1408, 1435, 1540, 1568, 1640, 1760, 1792, 1804, 1960, 2009, 2156, 2240, 2255, 2296, 2464, 2624, 2695, 2816, 2870, 3080, 3136, 3157, 3280, 3520, 3608, 3920, 4018, 4312, 4480, 4510, 4592, 4928, 5248, 5390, 5740, 6160, 6272, 6314, 6560, 7040, 7216, 7840, 8036, 8624, 8960, 9020, 9184, 9856, 10045, 10496, 10780, 11480, 12320, 12544, 12628, 13120, 14080, 14432, 15680, 15785, 16072, 17248, 18040, 18368, 19712, 20090, 21560, 22099, 22960, 24640, 25256, 26240, 28864, 31360, 31570, 32144, 34496, 36080, 36736, 40180, 43120, 44198, 45920, 49280, 50512, 52480, 57728, 62720, 63140, 64288, 68992, 72160, 73472, 80360, 86240, 88396, 91840, 98560, 101024, 110495, 115456, 126280, 128576, 137984, 144320, 160720, 172480, 176792, 183680, 202048, 220990, 252560, 257152, 288640, 321440, 344960, 353584, 367360, 404096, 441980, 505120, 514304, 577280, 642880, 689920, 707168, 808192, 883960, 1010240, 1285760, 1414336, 1767920, 2020480, 2571520, 2828672, 3535840, 4040960, 5657344, 7071680, 14143360, 28286720]

約数ペア:

[(1, 28286720), (2, 14143360), (4, 7071680), (5, 5657344), (7, 4040960), (8, 3535840), (10, 2828672), (11, 2571520), (14, 2020480), (16, 1767920), (20, 1414336), (22, 1285760), (28, 1010240), (32, 883960), (35, 808192), (40, 707168), (41, 689920), (44, 642880), (49, 577280), (55, 514304), (56, 505120), (64, 441980), (70, 404096), (77, 367360), (80, 353584), (82, 344960), (88, 321440), (98, 288640), (110, 257152), (112, 252560), (128, 220990), (140, 202048), (154, 183680), (160, 176792), (164, 172480), (176, 160720), (196, 144320), (205, 137984), (220, 128576), (224, 126280), (245, 115456), (256, 110495), (280, 101024), (287, 98560), (308, 91840), (320, 88396), (328, 86240), (352, 80360), (385, 73472), (392, 72160), (410, 68992), (440, 64288), (448, 63140), (451, 62720), (490, 57728), (539, 52480), (560, 50512), (574, 49280), (616, 45920), (640, 44198), (656, 43120), (704, 40180), (770, 36736), (784, 36080), (820, 34496), (880, 32144), (896, 31570), (902, 31360), (980, 28864), (1078, 26240), (1120, 25256), (1148, 24640), (1232, 22960), (1280, 22099), (1312, 21560), (1408, 20090), (1435, 19712), (1540, 18368), (1568, 18040), (1640, 17248), (1760, 16072), (1792, 15785), (1804, 15680), (1960, 14432), (2009, 14080), (2156, 13120), (2240, 12628), (2255, 12544), (2296, 12320), (2464, 11480), (2624, 10780), (2695, 10496), (2816, 10045), (2870, 9856), (3080, 9184), (3136, 9020), (3157, 8960), (3280, 8624), (3520, 8036), (3608, 7840), (3920, 7216), (4018, 7040), (4312, 6560), (4480, 6314), (4510, 6272), (4592, 6160), (4928, 5740), (5248, 5390)]