20899395

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42221}}^1$

素因数の和:42243

約数の個数: 24

約数和(自身を含む): 39519792

約数和(自身を除く): 18620397

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42221, 126663, 211105, 379989, 464431, 633315, 1393293, 1899945, 2322155, 4179879, 6966465, 20899395]

約数ペア:

[(1, 20899395), (3, 6966465), (5, 4179879), (9, 2322155), (11, 1899945), (15, 1393293), (33, 633315), (45, 464431), (55, 379989), (99, 211105), (165, 126663), (495, 42221)]