19318220

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{6949}}^1$

素因数の和:7097

約数の個数: 24

約数和(自身を含む): 40866000

約数和(自身を除く): 21547780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 6949, 13898, 27796, 34745, 69490, 138980, 965911, 1931822, 3863644, 4829555, 9659110, 19318220]

約数ペア:

[(1, 19318220), (2, 9659110), (4, 4829555), (5, 3863644), (10, 1931822), (20, 965911), (139, 138980), (278, 69490), (556, 34745), (695, 27796), (1390, 13898), (2780, 6949)]