21309001

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1\times {\mathrm{271}}^1$

素因数の和:564

約数の個数: 16

約数和(自身を含む): 25067520

約数和(自身を除く): 3758519

約数列:

[1, 7, 47, 239, 271, 329, 1673, 1897, 11233, 12737, 64769, 78631, 89159, 453383, 3044143, 21309001]

約数ペア:

[(1, 21309001), (7, 3044143), (47, 453383), (239, 89159), (271, 78631), (329, 64769), (1673, 12737), (1897, 11233)]