31905209

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{11657}}^1$

素因数の和:11704

約数の個数: 16

約数和(自身を含む): 40290048

約数和(自身を除く): 8384839

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 11657, 81599, 198169, 268111, 1387183, 1876777, 4557887, 31905209]

約数ペア:

[(1, 31905209), (7, 4557887), (17, 1876777), (23, 1387183), (119, 268111), (161, 198169), (391, 81599), (2737, 11657)]