639888909

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{317}}^1\times {\mathrm{61169}}^1$

素因数の和:61500

約数の個数: 16

約数和(自身を含む): 933698880

約数和(自身を除く): 293809971

約数列:

[1, 3, 11, 33, 317, 951, 3487, 10461, 61169, 183507, 672859, 2018577, 19390573, 58171719, 213296303, 639888909]

約数ペア:

[(1, 639888909), (3, 213296303), (11, 58171719), (33, 19390573), (317, 2018577), (951, 672859), (3487, 183507), (10461, 61169)]