18655839

素因数分解:

$3^6\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:338

約数の個数: 28

約数和(自身を含む): 28321816

約数和(自身を除く): 9665977

約数列:

[1, 3, 9, 27, 81, 157, 163, 243, 471, 489, 729, 1413, 1467, 4239, 4401, 12717, 13203, 25591, 38151, 39609, 76773, 114453, 118827, 230319, 690957, 2072871, 6218613, 18655839]

約数ペア:

[(1, 18655839), (3, 6218613), (9, 2072871), (27, 690957), (81, 230319), (157, 118827), (163, 114453), (243, 76773), (471, 39609), (489, 38151), (729, 25591), (1413, 13203), (1467, 12717), (4239, 4401)]