205218720

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{20359}}^1$

素因数の和:20387

約数の個数: 144

約数和(自身を含む): 800392320

約数和(自身を除く): 595173600

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, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2520, 3360, 5040, 10080, 20359, 40718, 61077, 81436, 101795, 122154, 142513, 162872, 183231, 203590, 244308, 285026, 305385, 325744, 366462, 407180, 427539, 488616, 570052, 610770, 651488, 712565, 732924, 814360, 855078, 916155, 977232, 1140104, 1221540, 1282617, 1425130, 1465848, 1628720, 1710156, 1832310, 1954464, 2137695, 2280208, 2443080, 2565234, 2850260, 2931696, 3257440, 3420312, 3664620, 4275390, 4560416, 4886160, 5130468, 5700520, 5863392, 6413085, 6840624, 7329240, 8550780, 9772320, 10260936, 11401040, 12826170, 13681248, 14658480, 17101560, 20521872, 22802080, 25652340, 29316960, 34203120, 41043744, 51304680, 68406240, 102609360, 205218720]

約数ペア:

[(1, 205218720), (2, 102609360), (3, 68406240), (4, 51304680), (5, 41043744), (6, 34203120), (7, 29316960), (8, 25652340), (9, 22802080), (10, 20521872), (12, 17101560), (14, 14658480), (15, 13681248), (16, 12826170), (18, 11401040), (20, 10260936), (21, 9772320), (24, 8550780), (28, 7329240), (30, 6840624), (32, 6413085), (35, 5863392), (36, 5700520), (40, 5130468), (42, 4886160), (45, 4560416), (48, 4275390), (56, 3664620), (60, 3420312), (63, 3257440), (70, 2931696), (72, 2850260), (80, 2565234), (84, 2443080), (90, 2280208), (96, 2137695), (105, 1954464), (112, 1832310), (120, 1710156), (126, 1628720), (140, 1465848), (144, 1425130), (160, 1282617), (168, 1221540), (180, 1140104), (210, 977232), (224, 916155), (240, 855078), (252, 814360), (280, 732924), (288, 712565), (315, 651488), (336, 610770), (360, 570052), (420, 488616), (480, 427539), (504, 407180), (560, 366462), (630, 325744), (672, 305385), (720, 285026), (840, 244308), (1008, 203590), (1120, 183231), (1260, 162872), (1440, 142513), (1680, 122154), (2016, 101795), (2520, 81436), (3360, 61077), (5040, 40718), (10080, 20359)]