19809559

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{367}}^1\times {\mathrm{701}}^1$

素因数の和:1086

約数の個数: 16

約数和(自身を含む): 24800256

約数和(自身を除く): 4990697

約数列:

[1, 7, 11, 77, 367, 701, 2569, 4037, 4907, 7711, 28259, 53977, 257267, 1800869, 2829937, 19809559]

約数ペア:

[(1, 19809559), (7, 2829937), (11, 1800869), (77, 257267), (367, 53977), (701, 28259), (2569, 7711), (4037, 4907)]