20380689

素因数分解:

$3^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{3203}}^1$

素因数の和:3317

約数の個数: 24

約数和(自身を含む): 33988032

約数和(自身を除く): 13607343

約数列:

[1, 3, 7, 9, 21, 63, 101, 303, 707, 909, 2121, 3203, 6363, 9609, 22421, 28827, 67263, 201789, 323503, 970509, 2264521, 2911527, 6793563, 20380689]

約数ペア:

[(1, 20380689), (3, 6793563), (7, 2911527), (9, 2264521), (21, 970509), (63, 323503), (101, 201789), (303, 67263), (707, 28827), (909, 22421), (2121, 9609), (3203, 6363)]