20321523

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8093}}^1$

素因数の和:8136

約数の個数: 20

約数和(自身を含む): 31339968

約数和(自身を除く): 11018445

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8093, 24279, 72837, 218511, 250883, 655533, 752649, 2257947, 6773841, 20321523]

約数ペア:

[(1, 20321523), (3, 6773841), (9, 2257947), (27, 752649), (31, 655533), (81, 250883), (93, 218511), (279, 72837), (837, 24279), (2511, 8093)]