261303280

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{191}}^1\times {\mathrm{349}}^1$

素因数の和:567

約数の個数: 120

約数和(自身を含む): 712454400

約数和(自身を除く): 451151120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 191, 196, 245, 280, 349, 382, 392, 490, 560, 698, 764, 784, 955, 980, 1337, 1396, 1528, 1745, 1910, 1960, 2443, 2674, 2792, 3056, 3490, 3820, 3920, 4886, 5348, 5584, 6685, 6980, 7640, 9359, 9772, 10696, 12215, 13370, 13960, 15280, 17101, 18718, 19544, 21392, 24430, 26740, 27920, 34202, 37436, 39088, 46795, 48860, 53480, 66659, 68404, 74872, 85505, 93590, 97720, 106960, 133318, 136808, 149744, 171010, 187180, 195440, 266636, 273616, 333295, 342020, 374360, 466613, 533272, 666590, 684040, 748720, 933226, 1066544, 1333180, 1368080, 1866452, 2333065, 2666360, 3266291, 3732904, 4666130, 5332720, 6532582, 7465808, 9332260, 13065164, 16331455, 18664520, 26130328, 32662910, 37329040, 52260656, 65325820, 130651640, 261303280]

約数ペア:

[(1, 261303280), (2, 130651640), (4, 65325820), (5, 52260656), (7, 37329040), (8, 32662910), (10, 26130328), (14, 18664520), (16, 16331455), (20, 13065164), (28, 9332260), (35, 7465808), (40, 6532582), (49, 5332720), (56, 4666130), (70, 3732904), (80, 3266291), (98, 2666360), (112, 2333065), (140, 1866452), (191, 1368080), (196, 1333180), (245, 1066544), (280, 933226), (349, 748720), (382, 684040), (392, 666590), (490, 533272), (560, 466613), (698, 374360), (764, 342020), (784, 333295), (955, 273616), (980, 266636), (1337, 195440), (1396, 187180), (1528, 171010), (1745, 149744), (1910, 136808), (1960, 133318), (2443, 106960), (2674, 97720), (2792, 93590), (3056, 85505), (3490, 74872), (3820, 68404), (3920, 66659), (4886, 53480), (5348, 48860), (5584, 46795), (6685, 39088), (6980, 37436), (7640, 34202), (9359, 27920), (9772, 26740), (10696, 24430), (12215, 21392), (13370, 19544), (13960, 18718), (15280, 17101)]