20685940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5531}}^1$

素因数の和:5568

約数の個数: 48

約数和(自身を含む): 50186304

約数和(自身を除く): 29500364

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5531, 11062, 22124, 27655, 55310, 60841, 94027, 110620, 121682, 188054, 243364, 304205, 376108, 470135, 608410, 940270, 1034297, 1216820, 1880540, 2068594, 4137188, 5171485, 10342970, 20685940]

約数ペア:

[(1, 20685940), (2, 10342970), (4, 5171485), (5, 4137188), (10, 2068594), (11, 1880540), (17, 1216820), (20, 1034297), (22, 940270), (34, 608410), (44, 470135), (55, 376108), (68, 304205), (85, 243364), (110, 188054), (170, 121682), (187, 110620), (220, 94027), (340, 60841), (374, 55310), (748, 27655), (935, 22124), (1870, 11062), (3740, 5531)]