256658080

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1723}}^1$

素因数の和:1771

約数の個数: 144

約数和(自身を含む): 742906080

約数和(自身を除く): 486248000

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, 196, 224, 245, 266, 280, 304, 380, 392, 490, 532, 560, 608, 665, 760, 784, 931, 980, 1064, 1120, 1330, 1520, 1568, 1723, 1862, 1960, 2128, 2660, 3040, 3446, 3724, 3920, 4256, 4655, 5320, 6892, 7448, 7840, 8615, 9310, 10640, 12061, 13784, 14896, 17230, 18620, 21280, 24122, 27568, 29792, 32737, 34460, 37240, 48244, 55136, 60305, 65474, 68920, 74480, 84427, 96488, 120610, 130948, 137840, 148960, 163685, 168854, 192976, 229159, 241220, 261896, 275680, 327370, 337708, 385952, 422135, 458318, 482440, 523792, 654740, 675416, 844270, 916636, 964880, 1047584, 1145795, 1309480, 1350832, 1604113, 1688540, 1833272, 1929760, 2291590, 2618960, 2701664, 3208226, 3377080, 3666544, 4583180, 5237920, 6416452, 6754160, 7333088, 8020565, 9166360, 12832904, 13508320, 16041130, 18332720, 25665808, 32082260, 36665440, 51331616, 64164520, 128329040, 256658080]

約数ペア:

[(1, 256658080), (2, 128329040), (4, 64164520), (5, 51331616), (7, 36665440), (8, 32082260), (10, 25665808), (14, 18332720), (16, 16041130), (19, 13508320), (20, 12832904), (28, 9166360), (32, 8020565), (35, 7333088), (38, 6754160), (40, 6416452), (49, 5237920), (56, 4583180), (70, 3666544), (76, 3377080), (80, 3208226), (95, 2701664), (98, 2618960), (112, 2291590), (133, 1929760), (140, 1833272), (152, 1688540), (160, 1604113), (190, 1350832), (196, 1309480), (224, 1145795), (245, 1047584), (266, 964880), (280, 916636), (304, 844270), (380, 675416), (392, 654740), (490, 523792), (532, 482440), (560, 458318), (608, 422135), (665, 385952), (760, 337708), (784, 327370), (931, 275680), (980, 261896), (1064, 241220), (1120, 229159), (1330, 192976), (1520, 168854), (1568, 163685), (1723, 148960), (1862, 137840), (1960, 130948), (2128, 120610), (2660, 96488), (3040, 84427), (3446, 74480), (3724, 68920), (3920, 65474), (4256, 60305), (4655, 55136), (5320, 48244), (6892, 37240), (7448, 34460), (7840, 32737), (8615, 29792), (9310, 27568), (10640, 24122), (12061, 21280), (13784, 18620), (14896, 17230)]