20867707

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1\times {\mathrm{421}}^1$

素因数の和:598

約数の個数: 16

約数和(自身を含む): 24482752

約数和(自身を除く): 3615045

約数列:

[1, 7, 73, 97, 421, 511, 679, 2947, 7081, 30733, 40837, 49567, 215131, 285859, 2981101, 20867707]

約数ペア:

[(1, 20867707), (7, 2981101), (73, 285859), (97, 215131), (421, 49567), (511, 40837), (679, 30733), (2947, 7081)]