21390596

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{691}}^1$

素因数の和:875

約数の個数: 24

約数和(自身を含む): 38364480

約数和(自身を除く): 16973884

約数列:

[1, 2, 4, 71, 109, 142, 218, 284, 436, 691, 1382, 2764, 7739, 15478, 30956, 49061, 75319, 98122, 150638, 196244, 301276, 5347649, 10695298, 21390596]

約数ペア:

[(1, 21390596), (2, 10695298), (4, 5347649), (71, 301276), (109, 196244), (142, 150638), (218, 98122), (284, 75319), (436, 49061), (691, 30956), (1382, 15478), (2764, 7739)]