21916808

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{5557}}^1$

素因数の和:5609

約数の個数: 32

約数和(自身を含む): 45019800

約数和(自身を除く): 23102992

約数列:

[1, 2, 4, 8, 17, 29, 34, 58, 68, 116, 136, 232, 493, 986, 1972, 3944, 5557, 11114, 22228, 44456, 94469, 161153, 188938, 322306, 377876, 644612, 755752, 1289224, 2739601, 5479202, 10958404, 21916808]

約数ペア:

[(1, 21916808), (2, 10958404), (4, 5479202), (8, 2739601), (17, 1289224), (29, 755752), (34, 644612), (58, 377876), (68, 322306), (116, 188938), (136, 161153), (232, 94469), (493, 44456), (986, 22228), (1972, 11114), (3944, 5557)]