160821920

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:383

約数の個数: 144

約数和(自身を含む): 449621928

約数和(自身を除く): 288800008

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, 281, 292, 365, 392, 490, 511, 560, 562, 584, 730, 784, 980, 1022, 1120, 1124, 1168, 1405, 1460, 1568, 1960, 1967, 2044, 2248, 2336, 2555, 2810, 2920, 3577, 3920, 3934, 4088, 4496, 5110, 5620, 5840, 7154, 7840, 7868, 8176, 8992, 9835, 10220, 11240, 11680, 13769, 14308, 15736, 16352, 17885, 19670, 20440, 20513, 22480, 27538, 28616, 31472, 35770, 39340, 40880, 41026, 44960, 55076, 57232, 62944, 68845, 71540, 78680, 81760, 82052, 102565, 110152, 114464, 137690, 143080, 143591, 157360, 164104, 205130, 220304, 275380, 286160, 287182, 314720, 328208, 410260, 440608, 550760, 572320, 574364, 656416, 717955, 820520, 1005137, 1101520, 1148728, 1435910, 1641040, 2010274, 2203040, 2297456, 2871820, 3282080, 4020548, 4594912, 5025685, 5743640, 8041096, 10051370, 11487280, 16082192, 20102740, 22974560, 32164384, 40205480, 80410960, 160821920]

約数ペア:

[(1, 160821920), (2, 80410960), (4, 40205480), (5, 32164384), (7, 22974560), (8, 20102740), (10, 16082192), (14, 11487280), (16, 10051370), (20, 8041096), (28, 5743640), (32, 5025685), (35, 4594912), (40, 4020548), (49, 3282080), (56, 2871820), (70, 2297456), (73, 2203040), (80, 2010274), (98, 1641040), (112, 1435910), (140, 1148728), (146, 1101520), (160, 1005137), (196, 820520), (224, 717955), (245, 656416), (280, 574364), (281, 572320), (292, 550760), (365, 440608), (392, 410260), (490, 328208), (511, 314720), (560, 287182), (562, 286160), (584, 275380), (730, 220304), (784, 205130), (980, 164104), (1022, 157360), (1120, 143591), (1124, 143080), (1168, 137690), (1405, 114464), (1460, 110152), (1568, 102565), (1960, 82052), (1967, 81760), (2044, 78680), (2248, 71540), (2336, 68845), (2555, 62944), (2810, 57232), (2920, 55076), (3577, 44960), (3920, 41026), (3934, 40880), (4088, 39340), (4496, 35770), (5110, 31472), (5620, 28616), (5840, 27538), (7154, 22480), (7840, 20513), (7868, 20440), (8176, 19670), (8992, 17885), (9835, 16352), (10220, 15736), (11240, 14308), (11680, 13769)]