20778687

素因数分解:

$3^8\times {\mathrm{3167}}^1$

素因数の和:3191

約数の個数: 18

約数和(自身を含む): 31176288

約数和(自身を除く): 10397601

約数列:

[1, 3, 9, 27, 81, 243, 729, 2187, 3167, 6561, 9501, 28503, 85509, 256527, 769581, 2308743, 6926229, 20778687]

約数ペア:

[(1, 20778687), (3, 6926229), (9, 2308743), (27, 769581), (81, 256527), (243, 85509), (729, 28503), (2187, 9501), (3167, 6561)]