20809614980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1930391}}^1$

素因数の和:1930425

約数の個数: 72

約数和(自身を含む): 55456301376

約数和(自身を除く): 34646686396

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 2156, 2695, 5390, 10780, 1930391, 3860782, 7721564, 9651955, 13512737, 19303910, 21234301, 27025474, 38607820, 42468602, 54050948, 67563685, 84937204, 94589159, 106171505, 135127370, 148640107, 189178318, 212343010, 270254740, 297280214, 378356636, 424686020, 472945795, 594560428, 743200535, 945891590, 1040480749, 1486401070, 1891783180, 2080961498, 2972802140, 4161922996, 5202403745, 10404807490, 20809614980]

約数ペア:

[(1, 20809614980), (2, 10404807490), (4, 5202403745), (5, 4161922996), (7, 2972802140), (10, 2080961498), (11, 1891783180), (14, 1486401070), (20, 1040480749), (22, 945891590), (28, 743200535), (35, 594560428), (44, 472945795), (49, 424686020), (55, 378356636), (70, 297280214), (77, 270254740), (98, 212343010), (110, 189178318), (140, 148640107), (154, 135127370), (196, 106171505), (220, 94589159), (245, 84937204), (308, 67563685), (385, 54050948), (490, 42468602), (539, 38607820), (770, 27025474), (980, 21234301), (1078, 19303910), (1540, 13512737), (2156, 9651955), (2695, 7721564), (5390, 3860782), (10780, 1930391)]