21148929

素因数分解:

$3^2\times {\mathrm{127}}^1\times {\mathrm{18503}}^1$

素因数の和:18636

約数の個数: 12

約数和(自身を含む): 30790656

約数和(自身を除く): 9641727

約数列:

[1, 3, 9, 127, 381, 1143, 18503, 55509, 166527, 2349881, 7049643, 21148929]

約数ペア:

[(1, 21148929), (3, 7049643), (9, 2349881), (127, 166527), (381, 55509), (1143, 18503)]