21496013

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{619}}^1$

素因数の和:689

約数の個数: 24

約数和(自身を含む): 27706560

約数和(自身を除く): 6210547

約数列:

[1, 7, 11, 41, 77, 121, 287, 451, 619, 847, 3157, 4333, 4961, 6809, 25379, 34727, 47663, 74899, 177653, 279169, 524293, 1954183, 3070859, 21496013]

約数ペア:

[(1, 21496013), (7, 3070859), (11, 1954183), (41, 524293), (77, 279169), (121, 177653), (287, 74899), (451, 47663), (619, 34727), (847, 25379), (3157, 6809), (4333, 4961)]