21076389

素因数分解:

$3^3\times {\mathrm{163}}^1\times {\mathrm{4789}}^1$

素因数の和:4961

約数の個数: 16

約数和(自身を含む): 31422400

約数和(自身を除く): 10346011

約数列:

[1, 3, 9, 27, 163, 489, 1467, 4401, 4789, 14367, 43101, 129303, 780607, 2341821, 7025463, 21076389]

約数ペア:

[(1, 21076389), (3, 7025463), (9, 2341821), (27, 780607), (163, 129303), (489, 43101), (1467, 14367), (4401, 4789)]