20702660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{677}}^1$

素因数の和:836

約数の個数: 48

約数和(自身を含む): 47839680

約数和(自身を除く): 27137020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 139, 220, 278, 556, 677, 695, 1354, 1390, 1529, 2708, 2780, 3058, 3385, 6116, 6770, 7447, 7645, 13540, 14894, 15290, 29788, 30580, 37235, 74470, 94103, 148940, 188206, 376412, 470515, 941030, 1035133, 1882060, 2070266, 4140532, 5175665, 10351330, 20702660]

約数ペア:

[(1, 20702660), (2, 10351330), (4, 5175665), (5, 4140532), (10, 2070266), (11, 1882060), (20, 1035133), (22, 941030), (44, 470515), (55, 376412), (110, 188206), (139, 148940), (220, 94103), (278, 74470), (556, 37235), (677, 30580), (695, 29788), (1354, 15290), (1390, 14894), (1529, 13540), (2708, 7645), (2780, 7447), (3058, 6770), (3385, 6116)]