18907173

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{241}}^1\times {\mathrm{379}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 28691520

約数和(自身を除く): 9784347

約数列:

[1, 3, 9, 23, 69, 207, 241, 379, 723, 1137, 2169, 3411, 5543, 8717, 16629, 26151, 49887, 78453, 91339, 274017, 822051, 2100797, 6302391, 18907173]

約数ペア:

[(1, 18907173), (3, 6302391), (9, 2100797), (23, 822051), (69, 274017), (207, 91339), (241, 78453), (379, 49887), (723, 26151), (1137, 16629), (2169, 8717), (3411, 5543)]