661993920

素因数分解:

$2^6\times 3^2\times 5^1\times 7^2\times {\mathrm{4691}}^1$

素因数の和:4728

約数の個数: 252

約数和(自身を含む): 2649300264

約数和(自身を除く): 1987306344

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, 49, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 98, 105, 112, 120, 126, 140, 144, 147, 160, 168, 180, 192, 196, 210, 224, 240, 245, 252, 280, 288, 294, 315, 320, 336, 360, 392, 420, 441, 448, 480, 490, 504, 560, 576, 588, 630, 672, 720, 735, 784, 840, 882, 960, 980, 1008, 1120, 1176, 1260, 1344, 1440, 1470, 1568, 1680, 1764, 1960, 2016, 2205, 2240, 2352, 2520, 2880, 2940, 3136, 3360, 3528, 3920, 4032, 4410, 4691, 4704, 5040, 5880, 6720, 7056, 7840, 8820, 9382, 9408, 10080, 11760, 14073, 14112, 15680, 17640, 18764, 20160, 23455, 23520, 28146, 28224, 32837, 35280, 37528, 42219, 46910, 47040, 56292, 65674, 70365, 70560, 75056, 84438, 93820, 98511, 112584, 131348, 140730, 141120, 150112, 164185, 168876, 187640, 197022, 211095, 225168, 229859, 262696, 281460, 295533, 300224, 328370, 337752, 375280, 394044, 422190, 450336, 459718, 492555, 525392, 562920, 591066, 656740, 675504, 689577, 750560, 788088, 844380, 900672, 919436, 985110, 1050784, 1125840, 1149295, 1182132, 1313480, 1351008, 1379154, 1477665, 1501120, 1576176, 1688760, 1838872, 1970220, 2068731, 2101568, 2251680, 2298590, 2364264, 2626960, 2702016, 2758308, 2955330, 3152352, 3377520, 3447885, 3677744, 3940440, 4137462, 4503360, 4597180, 4728528, 5253920, 5516616, 5910660, 6304704, 6755040, 6895770, 7355488, 7880880, 8274924, 9194360, 9457056, 10343655, 10507840, 11033232, 11821320, 13510080, 13791540, 14710976, 15761760, 16549848, 18388720, 18914112, 20687310, 22066464, 23642640, 27583080, 31523520, 33099696, 36777440, 41374620, 44132928, 47285280, 55166160, 66199392, 73554880, 82749240, 94570560, 110332320, 132398784, 165498480, 220664640, 330996960, 661993920]

約数ペア:

[(1, 661993920), (2, 330996960), (3, 220664640), (4, 165498480), (5, 132398784), (6, 110332320), (7, 94570560), (8, 82749240), (9, 73554880), (10, 66199392), (12, 55166160), (14, 47285280), (15, 44132928), (16, 41374620), (18, 36777440), (20, 33099696), (21, 31523520), (24, 27583080), (28, 23642640), (30, 22066464), (32, 20687310), (35, 18914112), (36, 18388720), (40, 16549848), (42, 15761760), (45, 14710976), (48, 13791540), (49, 13510080), (56, 11821320), (60, 11033232), (63, 10507840), (64, 10343655), (70, 9457056), (72, 9194360), (80, 8274924), (84, 7880880), (90, 7355488), (96, 6895770), (98, 6755040), (105, 6304704), (112, 5910660), (120, 5516616), (126, 5253920), (140, 4728528), (144, 4597180), (147, 4503360), (160, 4137462), (168, 3940440), (180, 3677744), (192, 3447885), (196, 3377520), (210, 3152352), (224, 2955330), (240, 2758308), (245, 2702016), (252, 2626960), (280, 2364264), (288, 2298590), (294, 2251680), (315, 2101568), (320, 2068731), (336, 1970220), (360, 1838872), (392, 1688760), (420, 1576176), (441, 1501120), (448, 1477665), (480, 1379154), (490, 1351008), (504, 1313480), (560, 1182132), (576, 1149295), (588, 1125840), (630, 1050784), (672, 985110), (720, 919436), (735, 900672), (784, 844380), (840, 788088), (882, 750560), (960, 689577), (980, 675504), (1008, 656740), (1120, 591066), (1176, 562920), (1260, 525392), (1344, 492555), (1440, 459718), (1470, 450336), (1568, 422190), (1680, 394044), (1764, 375280), (1960, 337752), (2016, 328370), (2205, 300224), (2240, 295533), (2352, 281460), (2520, 262696), (2880, 229859), (2940, 225168), (3136, 211095), (3360, 197022), (3528, 187640), (3920, 168876), (4032, 164185), (4410, 150112), (4691, 141120), (4704, 140730), (5040, 131348), (5880, 112584), (6720, 98511), (7056, 93820), (7840, 84438), (8820, 75056), (9382, 70560), (9408, 70365), (10080, 65674), (11760, 56292), (14073, 47040), (14112, 46910), (15680, 42219), (17640, 37528), (18764, 35280), (20160, 32837), (23455, 28224), (23520, 28146)]