261656640

素因数分解:

$2^6\times 3^2\times 5^1\times 7^1\times {\mathrm{12979}}^1$

素因数の和:13009

約数の個数: 168

約数和(自身を含む): 1028639040

約数和(自身を除く): 766982400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 420, 448, 480, 504, 560, 576, 630, 672, 720, 840, 960, 1008, 1120, 1260, 1344, 1440, 1680, 2016, 2240, 2520, 2880, 3360, 4032, 5040, 6720, 10080, 12979, 20160, 25958, 38937, 51916, 64895, 77874, 90853, 103832, 116811, 129790, 155748, 181706, 194685, 207664, 233622, 259580, 272559, 311496, 363412, 389370, 415328, 454265, 467244, 519160, 545118, 584055, 622992, 726824, 778740, 817677, 830656, 908530, 934488, 1038320, 1090236, 1168110, 1245984, 1362795, 1453648, 1557480, 1635354, 1817060, 1868976, 2076640, 2180472, 2336220, 2491968, 2725590, 2907296, 3114960, 3270708, 3634120, 3737952, 4088385, 4153280, 4360944, 4672440, 5451180, 5814592, 6229920, 6541416, 7268240, 7475904, 8176770, 8721888, 9344880, 10902360, 12459840, 13082832, 14536480, 16353540, 17443776, 18689760, 21804720, 26165664, 29072960, 32707080, 37379520, 43609440, 52331328, 65414160, 87218880, 130828320, 261656640]

約数ペア:

[(1, 261656640), (2, 130828320), (3, 87218880), (4, 65414160), (5, 52331328), (6, 43609440), (7, 37379520), (8, 32707080), (9, 29072960), (10, 26165664), (12, 21804720), (14, 18689760), (15, 17443776), (16, 16353540), (18, 14536480), (20, 13082832), (21, 12459840), (24, 10902360), (28, 9344880), (30, 8721888), (32, 8176770), (35, 7475904), (36, 7268240), (40, 6541416), (42, 6229920), (45, 5814592), (48, 5451180), (56, 4672440), (60, 4360944), (63, 4153280), (64, 4088385), (70, 3737952), (72, 3634120), (80, 3270708), (84, 3114960), (90, 2907296), (96, 2725590), (105, 2491968), (112, 2336220), (120, 2180472), (126, 2076640), (140, 1868976), (144, 1817060), (160, 1635354), (168, 1557480), (180, 1453648), (192, 1362795), (210, 1245984), (224, 1168110), (240, 1090236), (252, 1038320), (280, 934488), (288, 908530), (315, 830656), (320, 817677), (336, 778740), (360, 726824), (420, 622992), (448, 584055), (480, 545118), (504, 519160), (560, 467244), (576, 454265), (630, 415328), (672, 389370), (720, 363412), (840, 311496), (960, 272559), (1008, 259580), (1120, 233622), (1260, 207664), (1344, 194685), (1440, 181706), (1680, 155748), (2016, 129790), (2240, 116811), (2520, 103832), (2880, 90853), (3360, 77874), (4032, 64895), (5040, 51916), (6720, 38937), (10080, 25958), (12979, 20160)]