278719840

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{487}}^1$

素因数の和:589

約数の個数: 144

約数和(自身を含む): 778069152

約数和(自身を除く): 499349312

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 73, 80, 98, 112, 140, 146, 160, 196, 224, 245, 280, 292, 365, 392, 487, 490, 511, 560, 584, 730, 784, 974, 980, 1022, 1120, 1168, 1460, 1568, 1948, 1960, 2044, 2336, 2435, 2555, 2920, 3409, 3577, 3896, 3920, 4088, 4870, 5110, 5840, 6818, 7154, 7792, 7840, 8176, 9740, 10220, 11680, 13636, 14308, 15584, 16352, 17045, 17885, 19480, 20440, 23863, 27272, 28616, 34090, 35551, 35770, 38960, 40880, 47726, 54544, 57232, 68180, 71102, 71540, 77920, 81760, 95452, 109088, 114464, 119315, 136360, 142204, 143080, 177755, 190904, 238630, 248857, 272720, 284408, 286160, 355510, 381808, 477260, 497714, 545440, 568816, 572320, 711020, 763616, 954520, 995428, 1137632, 1244285, 1422040, 1741999, 1909040, 1990856, 2488570, 2844080, 3483998, 3818080, 3981712, 4977140, 5688160, 6967996, 7963424, 8709995, 9954280, 13935992, 17419990, 19908560, 27871984, 34839980, 39817120, 55743968, 69679960, 139359920, 278719840]

約数ペア:

[(1, 278719840), (2, 139359920), (4, 69679960), (5, 55743968), (7, 39817120), (8, 34839980), (10, 27871984), (14, 19908560), (16, 17419990), (20, 13935992), (28, 9954280), (32, 8709995), (35, 7963424), (40, 6967996), (49, 5688160), (56, 4977140), (70, 3981712), (73, 3818080), (80, 3483998), (98, 2844080), (112, 2488570), (140, 1990856), (146, 1909040), (160, 1741999), (196, 1422040), (224, 1244285), (245, 1137632), (280, 995428), (292, 954520), (365, 763616), (392, 711020), (487, 572320), (490, 568816), (511, 545440), (560, 497714), (584, 477260), (730, 381808), (784, 355510), (974, 286160), (980, 284408), (1022, 272720), (1120, 248857), (1168, 238630), (1460, 190904), (1568, 177755), (1948, 143080), (1960, 142204), (2044, 136360), (2336, 119315), (2435, 114464), (2555, 109088), (2920, 95452), (3409, 81760), (3577, 77920), (3896, 71540), (3920, 71102), (4088, 68180), (4870, 57232), (5110, 54544), (5840, 47726), (6818, 40880), (7154, 38960), (7792, 35770), (7840, 35551), (8176, 34090), (9740, 28616), (10220, 27272), (11680, 23863), (13636, 20440), (14308, 19480), (15584, 17885), (16352, 17045)]