20491541

素因数分解:

$7^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{293}}^1$

素因数の和:500

約数の個数: 16

約数和(自身を含む): 23971584

約数和(自身を除く): 3480043

約数列:

[1, 7, 97, 103, 293, 679, 721, 2051, 9991, 28421, 30179, 69937, 198947, 211253, 2927363, 20491541]

約数ペア:

[(1, 20491541), (7, 2927363), (97, 211253), (103, 198947), (293, 69937), (679, 30179), (721, 28421), (2051, 9991)]