81551997

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{2417}}^1$

素因数の和:2609

約数の個数: 24

約数和(自身を含む): 123724224

約数和(自身を除く): 42172227

約数列:

[1, 3, 9, 23, 69, 163, 207, 489, 1467, 2417, 3749, 7251, 11247, 21753, 33741, 55591, 166773, 393971, 500319, 1181913, 3545739, 9061333, 27183999, 81551997]

約数ペア:

[(1, 81551997), (3, 27183999), (9, 9061333), (23, 3545739), (69, 1181913), (163, 500319), (207, 393971), (489, 166773), (1467, 55591), (2417, 33741), (3749, 21753), (7251, 11247)]