28749280

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{193}}^1$

素因数の和:241

約数の個数: 144

約数和(自身を含む): 83598480

約数和(自身を除く): 54849200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 49, 56, 70, 76, 80, 95, 98, 112, 133, 140, 152, 160, 190, 193, 196, 224, 245, 266, 280, 304, 380, 386, 392, 490, 532, 560, 608, 665, 760, 772, 784, 931, 965, 980, 1064, 1120, 1330, 1351, 1520, 1544, 1568, 1862, 1930, 1960, 2128, 2660, 2702, 3040, 3088, 3667, 3724, 3860, 3920, 4256, 4655, 5320, 5404, 6176, 6755, 7334, 7448, 7720, 7840, 9310, 9457, 10640, 10808, 13510, 14668, 14896, 15440, 18335, 18620, 18914, 21280, 21616, 25669, 27020, 29336, 29792, 30880, 36670, 37240, 37828, 43232, 47285, 51338, 54040, 58672, 73340, 74480, 75656, 94570, 102676, 108080, 117344, 128345, 146680, 148960, 151312, 179683, 189140, 205352, 216160, 256690, 293360, 302624, 359366, 378280, 410704, 513380, 586720, 718732, 756560, 821408, 898415, 1026760, 1437464, 1513120, 1796830, 2053520, 2874928, 3593660, 4107040, 5749856, 7187320, 14374640, 28749280]

約数ペア:

[(1, 28749280), (2, 14374640), (4, 7187320), (5, 5749856), (7, 4107040), (8, 3593660), (10, 2874928), (14, 2053520), (16, 1796830), (19, 1513120), (20, 1437464), (28, 1026760), (32, 898415), (35, 821408), (38, 756560), (40, 718732), (49, 586720), (56, 513380), (70, 410704), (76, 378280), (80, 359366), (95, 302624), (98, 293360), (112, 256690), (133, 216160), (140, 205352), (152, 189140), (160, 179683), (190, 151312), (193, 148960), (196, 146680), (224, 128345), (245, 117344), (266, 108080), (280, 102676), (304, 94570), (380, 75656), (386, 74480), (392, 73340), (490, 58672), (532, 54040), (560, 51338), (608, 47285), (665, 43232), (760, 37828), (772, 37240), (784, 36670), (931, 30880), (965, 29792), (980, 29336), (1064, 27020), (1120, 25669), (1330, 21616), (1351, 21280), (1520, 18914), (1544, 18620), (1568, 18335), (1862, 15440), (1930, 14896), (1960, 14668), (2128, 13510), (2660, 10808), (2702, 10640), (3040, 9457), (3088, 9310), (3667, 7840), (3724, 7720), (3860, 7448), (3920, 7334), (4256, 6755), (4655, 6176), (5320, 5404)]