81640205

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{30983}}^1$

素因数の和:31036

約数の個数: 16

約数和(自身を含む): 107080704

約数和(自身を除く): 25440499

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 30983, 154915, 526711, 960473, 2633555, 4802365, 16328041, 81640205]

約数ペア:

[(1, 81640205), (5, 16328041), (17, 4802365), (31, 2633555), (85, 960473), (155, 526711), (527, 154915), (2635, 30983)]