28521920

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:155

約数の個数: 168

約数和(自身を含む): 84435696

約数和(自身を除く): 55913776

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 49, 56, 64, 68, 70, 80, 85, 98, 107, 112, 119, 136, 140, 160, 170, 196, 214, 224, 238, 245, 272, 280, 320, 340, 392, 428, 448, 476, 490, 535, 544, 560, 595, 680, 749, 784, 833, 856, 952, 980, 1070, 1088, 1120, 1190, 1360, 1498, 1568, 1666, 1712, 1819, 1904, 1960, 2140, 2240, 2380, 2720, 2996, 3136, 3332, 3424, 3638, 3745, 3808, 3920, 4165, 4280, 4760, 5243, 5440, 5992, 6664, 6848, 7276, 7490, 7616, 7840, 8330, 8560, 9095, 9520, 10486, 11984, 12733, 13328, 14552, 14980, 15680, 16660, 17120, 18190, 19040, 20972, 23968, 25466, 26215, 26656, 29104, 29960, 33320, 34240, 36380, 38080, 41944, 47936, 50932, 52430, 53312, 58208, 59920, 63665, 66640, 72760, 83888, 89131, 101864, 104860, 116416, 119840, 127330, 133280, 145520, 167776, 178262, 203728, 209720, 239680, 254660, 266560, 291040, 335552, 356524, 407456, 419440, 445655, 509320, 582080, 713048, 814912, 838880, 891310, 1018640, 1426096, 1677760, 1782620, 2037280, 2852192, 3565240, 4074560, 5704384, 7130480, 14260960, 28521920]

約数ペア:

[(1, 28521920), (2, 14260960), (4, 7130480), (5, 5704384), (7, 4074560), (8, 3565240), (10, 2852192), (14, 2037280), (16, 1782620), (17, 1677760), (20, 1426096), (28, 1018640), (32, 891310), (34, 838880), (35, 814912), (40, 713048), (49, 582080), (56, 509320), (64, 445655), (68, 419440), (70, 407456), (80, 356524), (85, 335552), (98, 291040), (107, 266560), (112, 254660), (119, 239680), (136, 209720), (140, 203728), (160, 178262), (170, 167776), (196, 145520), (214, 133280), (224, 127330), (238, 119840), (245, 116416), (272, 104860), (280, 101864), (320, 89131), (340, 83888), (392, 72760), (428, 66640), (448, 63665), (476, 59920), (490, 58208), (535, 53312), (544, 52430), (560, 50932), (595, 47936), (680, 41944), (749, 38080), (784, 36380), (833, 34240), (856, 33320), (952, 29960), (980, 29104), (1070, 26656), (1088, 26215), (1120, 25466), (1190, 23968), (1360, 20972), (1498, 19040), (1568, 18190), (1666, 17120), (1712, 16660), (1819, 15680), (1904, 14980), (1960, 14552), (2140, 13328), (2240, 12733), (2380, 11984), (2720, 10486), (2996, 9520), (3136, 9095), (3332, 8560), (3424, 8330), (3638, 7840), (3745, 7616), (3808, 7490), (3920, 7276), (4165, 6848), (4280, 6664), (4760, 5992), (5243, 5440)]