20291999

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1009}}^1$

素因数の和:1059

約数の個数: 24

約数和(自身を含む): 26615520

約数和(自身を除く): 6323521

約数列:

[1, 7, 13, 17, 91, 119, 169, 221, 1009, 1183, 1547, 2873, 7063, 13117, 17153, 20111, 91819, 120071, 170521, 222989, 1193647, 1560923, 2898857, 20291999]

約数ペア:

[(1, 20291999), (7, 2898857), (13, 1560923), (17, 1193647), (91, 222989), (119, 170521), (169, 120071), (221, 91819), (1009, 20111), (1183, 17153), (1547, 13117), (2873, 7063)]