21379468

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{647}}^1\times {\mathrm{751}}^1$

素因数の和:1413

約数の個数: 24

約数和(自身を含む): 40932864

約数和(自身を除く): 19553396

約数列:

[1, 2, 4, 11, 22, 44, 647, 751, 1294, 1502, 2588, 3004, 7117, 8261, 14234, 16522, 28468, 33044, 485897, 971794, 1943588, 5344867, 10689734, 21379468]

約数ペア:

[(1, 21379468), (2, 10689734), (4, 5344867), (11, 1943588), (22, 971794), (44, 485897), (647, 33044), (751, 28468), (1294, 16522), (1502, 14234), (2588, 8261), (3004, 7117)]