25720173

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{10243}}^1$

素因数の和:10286

約数の個数: 20

約数和(自身を含む): 39664768

約数和(自身を除く): 13944595

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 10243, 30729, 92187, 276561, 317533, 829683, 952599, 2857797, 8573391, 25720173]

約数ペア:

[(1, 25720173), (3, 8573391), (9, 2857797), (27, 952599), (31, 829683), (81, 317533), (93, 276561), (279, 92187), (837, 30729), (2511, 10243)]