20518660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2081}}^1$

素因数の和:2136

約数の個数: 48

約数和(自身を含む): 47219760

約数和(自身を除く): 26701100

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 170, 290, 340, 493, 580, 986, 1972, 2081, 2465, 4162, 4930, 8324, 9860, 10405, 20810, 35377, 41620, 60349, 70754, 120698, 141508, 176885, 241396, 301745, 353770, 603490, 707540, 1025933, 1206980, 2051866, 4103732, 5129665, 10259330, 20518660]

約数ペア:

[(1, 20518660), (2, 10259330), (4, 5129665), (5, 4103732), (10, 2051866), (17, 1206980), (20, 1025933), (29, 707540), (34, 603490), (58, 353770), (68, 301745), (85, 241396), (116, 176885), (145, 141508), (170, 120698), (290, 70754), (340, 60349), (493, 41620), (580, 35377), (986, 20810), (1972, 10405), (2081, 9860), (2465, 8324), (4162, 4930)]