21280167

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{857}}^1$

素因数の和:983

約数の個数: 24

約数和(自身を含む): 32123520

約数和(自身を除く): 10843353

約数列:

[1, 3, 9, 31, 89, 93, 267, 279, 801, 857, 2571, 2759, 7713, 8277, 24831, 26567, 76273, 79701, 228819, 239103, 686457, 2364463, 7093389, 21280167]

約数ペア:

[(1, 21280167), (3, 7093389), (9, 2364463), (31, 686457), (89, 239103), (93, 228819), (267, 79701), (279, 76273), (801, 26567), (857, 24831), (2571, 8277), (2759, 7713)]