18716439

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{509}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 30551040

約数和(自身を除く): 11834601

約数列:

[1, 3, 7, 17, 21, 51, 103, 119, 309, 357, 509, 721, 1527, 1751, 2163, 3563, 5253, 8653, 10689, 12257, 25959, 36771, 52427, 60571, 157281, 181713, 366989, 891259, 1100967, 2673777, 6238813, 18716439]

約数ペア:

[(1, 18716439), (3, 6238813), (7, 2673777), (17, 1100967), (21, 891259), (51, 366989), (103, 181713), (119, 157281), (309, 60571), (357, 52427), (509, 36771), (721, 25959), (1527, 12257), (1751, 10689), (2163, 8653), (3563, 5253)]