20886140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{683}}^1$

素因数の和:842

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 27376900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 139, 220, 278, 556, 683, 695, 1366, 1390, 1529, 2732, 2780, 3058, 3415, 6116, 6830, 7513, 7645, 13660, 15026, 15290, 30052, 30580, 37565, 75130, 94937, 150260, 189874, 379748, 474685, 949370, 1044307, 1898740, 2088614, 4177228, 5221535, 10443070, 20886140]

約数ペア:

[(1, 20886140), (2, 10443070), (4, 5221535), (5, 4177228), (10, 2088614), (11, 1898740), (20, 1044307), (22, 949370), (44, 474685), (55, 379748), (110, 189874), (139, 150260), (220, 94937), (278, 75130), (556, 37565), (683, 30580), (695, 30052), (1366, 15290), (1390, 15026), (1529, 13660), (2732, 7645), (2780, 7513), (3058, 6830), (3415, 6116)]