20878893

素因数分解:

$3^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1831}}^1$

素因数の和:2025

約数の個数: 24

約数和(自身を含む): 34676096

約数和(自身を除く): 13797203

約数列:

[1, 3, 7, 9, 21, 63, 181, 543, 1267, 1629, 1831, 3801, 5493, 11403, 12817, 16479, 38451, 115353, 331411, 994233, 2319877, 2982699, 6959631, 20878893]

約数ペア:

[(1, 20878893), (3, 6959631), (7, 2982699), (9, 2319877), (21, 994233), (63, 331411), (181, 115353), (543, 38451), (1267, 16479), (1629, 12817), (1831, 11403), (3801, 5493)]