21520597

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:193

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 5850923

約数列:

[1, 7, 19, 43, 53, 71, 133, 301, 371, 497, 817, 1007, 1349, 2279, 3053, 3763, 5719, 7049, 9443, 15953, 21371, 26341, 43301, 58007, 71497, 161809, 303107, 406049, 500479, 1132663, 3074371, 21520597]

約数ペア:

[(1, 21520597), (7, 3074371), (19, 1132663), (43, 500479), (53, 406049), (71, 303107), (133, 161809), (301, 71497), (371, 58007), (497, 43301), (817, 26341), (1007, 21371), (1349, 15953), (2279, 9443), (3053, 7049), (3763, 5719)]