21019389

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{1283}}^1$

素因数の和:1456

約数の個数: 16

約数和(自身を含む): 28925952

約数和(自身を除く): 7906563

約数列:

[1, 3, 43, 127, 129, 381, 1283, 3849, 5461, 16383, 55169, 162941, 165507, 488823, 7006463, 21019389]

約数ペア:

[(1, 21019389), (3, 7006463), (43, 488823), (127, 165507), (129, 162941), (381, 55169), (1283, 16383), (3849, 5461)]