71987859

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{28669}}^1$

素因数の和:28712

約数の個数: 20

約数和(自身を含む): 111010240

約数和(自身を除く): 39022381

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 28669, 86007, 258021, 774063, 888739, 2322189, 2666217, 7998651, 23995953, 71987859]

約数ペア:

[(1, 71987859), (3, 23995953), (9, 7998651), (27, 2666217), (31, 2322189), (81, 888739), (93, 774063), (279, 258021), (837, 86007), (2511, 28669)]