257277440

素因数分解:

$2^9\times 5^1\times 7^3\times {\mathrm{293}}^1$

素因数の和:337

約数の個数: 160

約数和(自身を含む): 721828800

約数和(自身を除く): 464551360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 293, 320, 343, 392, 448, 490, 512, 560, 586, 640, 686, 784, 896, 980, 1120, 1172, 1280, 1372, 1465, 1568, 1715, 1792, 1960, 2051, 2240, 2344, 2560, 2744, 2930, 3136, 3430, 3584, 3920, 4102, 4480, 4688, 5488, 5860, 6272, 6860, 7840, 8204, 8960, 9376, 10255, 10976, 11720, 12544, 13720, 14357, 15680, 16408, 17920, 18752, 20510, 21952, 23440, 25088, 27440, 28714, 31360, 32816, 37504, 41020, 43904, 46880, 54880, 57428, 62720, 65632, 71785, 75008, 82040, 87808, 93760, 100499, 109760, 114856, 125440, 131264, 143570, 150016, 164080, 175616, 187520, 200998, 219520, 229712, 262528, 287140, 328160, 375040, 401996, 439040, 459424, 502495, 525056, 574280, 656320, 750080, 803992, 878080, 918848, 1004990, 1050112, 1148560, 1312640, 1607984, 1837696, 2009980, 2297120, 2625280, 3215968, 3675392, 4019960, 4594240, 5250560, 6431936, 7350784, 8039920, 9188480, 12863872, 16079840, 18376960, 25727744, 32159680, 36753920, 51455488, 64319360, 128638720, 257277440]

約数ペア:

[(1, 257277440), (2, 128638720), (4, 64319360), (5, 51455488), (7, 36753920), (8, 32159680), (10, 25727744), (14, 18376960), (16, 16079840), (20, 12863872), (28, 9188480), (32, 8039920), (35, 7350784), (40, 6431936), (49, 5250560), (56, 4594240), (64, 4019960), (70, 3675392), (80, 3215968), (98, 2625280), (112, 2297120), (128, 2009980), (140, 1837696), (160, 1607984), (196, 1312640), (224, 1148560), (245, 1050112), (256, 1004990), (280, 918848), (293, 878080), (320, 803992), (343, 750080), (392, 656320), (448, 574280), (490, 525056), (512, 502495), (560, 459424), (586, 439040), (640, 401996), (686, 375040), (784, 328160), (896, 287140), (980, 262528), (1120, 229712), (1172, 219520), (1280, 200998), (1372, 187520), (1465, 175616), (1568, 164080), (1715, 150016), (1792, 143570), (1960, 131264), (2051, 125440), (2240, 114856), (2344, 109760), (2560, 100499), (2744, 93760), (2930, 87808), (3136, 82040), (3430, 75008), (3584, 71785), (3920, 65632), (4102, 62720), (4480, 57428), (4688, 54880), (5488, 46880), (5860, 43904), (6272, 41020), (6860, 37504), (7840, 32816), (8204, 31360), (8960, 28714), (9376, 27440), (10255, 25088), (10976, 23440), (11720, 21952), (12544, 20510), (13720, 18752), (14357, 17920), (15680, 16408)]