256824320

素因数分解:

$2^{10}\times 5^1\times {\mathrm{103}}^1\times {\mathrm{487}}^1$

素因数の和:615

約数の個数: 88

約数和(自身を含む): 623336064

約数和(自身を除く): 366511744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 103, 128, 160, 206, 256, 320, 412, 487, 512, 515, 640, 824, 974, 1024, 1030, 1280, 1648, 1948, 2060, 2435, 2560, 3296, 3896, 4120, 4870, 5120, 6592, 7792, 8240, 9740, 13184, 15584, 16480, 19480, 26368, 31168, 32960, 38960, 50161, 52736, 62336, 65920, 77920, 100322, 105472, 124672, 131840, 155840, 200644, 249344, 250805, 263680, 311680, 401288, 498688, 501610, 527360, 623360, 802576, 1003220, 1246720, 1605152, 2006440, 2493440, 3210304, 4012880, 6420608, 8025760, 12841216, 16051520, 25682432, 32103040, 51364864, 64206080, 128412160, 256824320]

約数ペア:

[(1, 256824320), (2, 128412160), (4, 64206080), (5, 51364864), (8, 32103040), (10, 25682432), (16, 16051520), (20, 12841216), (32, 8025760), (40, 6420608), (64, 4012880), (80, 3210304), (103, 2493440), (128, 2006440), (160, 1605152), (206, 1246720), (256, 1003220), (320, 802576), (412, 623360), (487, 527360), (512, 501610), (515, 498688), (640, 401288), (824, 311680), (974, 263680), (1024, 250805), (1030, 249344), (1280, 200644), (1648, 155840), (1948, 131840), (2060, 124672), (2435, 105472), (2560, 100322), (3296, 77920), (3896, 65920), (4120, 62336), (4870, 52736), (5120, 50161), (6592, 38960), (7792, 32960), (8240, 31168), (9740, 26368), (13184, 19480), (15584, 16480)]