20871891

素因数分解:

$3^3\times {\mathrm{113}}^1\times {\mathrm{6841}}^1$

素因数の和:6963

約数の個数: 16

約数和(自身を含む): 31199520

約数和(自身を除く): 10327629

約数列:

[1, 3, 9, 27, 113, 339, 1017, 3051, 6841, 20523, 61569, 184707, 773033, 2319099, 6957297, 20871891]

約数ペア:

[(1, 20871891), (3, 6957297), (9, 2319099), (27, 773033), (113, 184707), (339, 61569), (1017, 20523), (3051, 6841)]