21563339

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1009}}^1$

素因数の和:1130

約数の個数: 16

約数和(自身を含む): 25597440

約数和(自身を除く): 4034101

約数列:

[1, 7, 43, 71, 301, 497, 1009, 3053, 7063, 21371, 43387, 71639, 303709, 501473, 3080477, 21563339]

約数ペア:

[(1, 21563339), (7, 3080477), (43, 501473), (71, 303709), (301, 71639), (497, 43387), (1009, 21371), (3053, 7063)]