639256431

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{739}}^1\times {\mathrm{2383}}^1$

素因数の和:3147

約数の個数: 24

約数和(自身を含む): 938533120

約数和(自身を除く): 299276689

約数列:

[1, 3, 11, 33, 121, 363, 739, 2217, 2383, 7149, 8129, 24387, 26213, 78639, 89419, 268257, 288343, 865029, 1761037, 5283111, 19371407, 58114221, 213085477, 639256431]

約数ペア:

[(1, 639256431), (3, 213085477), (11, 58114221), (33, 19371407), (121, 5283111), (363, 1761037), (739, 865029), (2217, 288343), (2383, 268257), (7149, 89419), (8129, 78639), (24387, 26213)]