20537440

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1667}}^1$

素因数の和:1700

約数の個数: 96

約数和(自身を含む): 60528384

約数和(自身を除く): 39990944

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 160, 176, 220, 224, 280, 308, 352, 385, 440, 560, 616, 770, 880, 1120, 1232, 1540, 1667, 1760, 2464, 3080, 3334, 6160, 6668, 8335, 11669, 12320, 13336, 16670, 18337, 23338, 26672, 33340, 36674, 46676, 53344, 58345, 66680, 73348, 91685, 93352, 116690, 128359, 133360, 146696, 183370, 186704, 233380, 256718, 266720, 293392, 366740, 373408, 466760, 513436, 586784, 641795, 733480, 933520, 1026872, 1283590, 1466960, 1867040, 2053744, 2567180, 2933920, 4107488, 5134360, 10268720, 20537440]

約数ペア:

[(1, 20537440), (2, 10268720), (4, 5134360), (5, 4107488), (7, 2933920), (8, 2567180), (10, 2053744), (11, 1867040), (14, 1466960), (16, 1283590), (20, 1026872), (22, 933520), (28, 733480), (32, 641795), (35, 586784), (40, 513436), (44, 466760), (55, 373408), (56, 366740), (70, 293392), (77, 266720), (80, 256718), (88, 233380), (110, 186704), (112, 183370), (140, 146696), (154, 133360), (160, 128359), (176, 116690), (220, 93352), (224, 91685), (280, 73348), (308, 66680), (352, 58345), (385, 53344), (440, 46676), (560, 36674), (616, 33340), (770, 26672), (880, 23338), (1120, 18337), (1232, 16670), (1540, 13336), (1667, 12320), (1760, 11669), (2464, 8335), (3080, 6668), (3334, 6160)]