256467840

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{599}}^1$

素因数の和:844

約数の個数: 128

約数和(自身を含む): 822528000

約数和(自身を除く): 566060160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 223, 240, 320, 384, 446, 480, 599, 640, 669, 892, 960, 1115, 1198, 1338, 1784, 1797, 1920, 2230, 2396, 2676, 2995, 3345, 3568, 3594, 4460, 4792, 5352, 5990, 6690, 7136, 7188, 8920, 8985, 9584, 10704, 11980, 13380, 14272, 14376, 17840, 17970, 19168, 21408, 23960, 26760, 28544, 28752, 35680, 35940, 38336, 42816, 47920, 53520, 57504, 71360, 71880, 76672, 85632, 95840, 107040, 115008, 133577, 142720, 143760, 191680, 214080, 230016, 267154, 287520, 383360, 400731, 428160, 534308, 575040, 667885, 801462, 1068616, 1150080, 1335770, 1602924, 2003655, 2137232, 2671540, 3205848, 4007310, 4274464, 5343080, 6411696, 8014620, 8548928, 10686160, 12823392, 16029240, 17097856, 21372320, 25646784, 32058480, 42744640, 51293568, 64116960, 85489280, 128233920, 256467840]

約数ペア:

[(1, 256467840), (2, 128233920), (3, 85489280), (4, 64116960), (5, 51293568), (6, 42744640), (8, 32058480), (10, 25646784), (12, 21372320), (15, 17097856), (16, 16029240), (20, 12823392), (24, 10686160), (30, 8548928), (32, 8014620), (40, 6411696), (48, 5343080), (60, 4274464), (64, 4007310), (80, 3205848), (96, 2671540), (120, 2137232), (128, 2003655), (160, 1602924), (192, 1335770), (223, 1150080), (240, 1068616), (320, 801462), (384, 667885), (446, 575040), (480, 534308), (599, 428160), (640, 400731), (669, 383360), (892, 287520), (960, 267154), (1115, 230016), (1198, 214080), (1338, 191680), (1784, 143760), (1797, 142720), (1920, 133577), (2230, 115008), (2396, 107040), (2676, 95840), (2995, 85632), (3345, 76672), (3568, 71880), (3594, 71360), (4460, 57504), (4792, 53520), (5352, 47920), (5990, 42816), (6690, 38336), (7136, 35940), (7188, 35680), (8920, 28752), (8985, 28544), (9584, 26760), (10704, 23960), (11980, 21408), (13380, 19168), (14272, 17970), (14376, 17840)]