81856475

素因数分解:

$5^2\times {\mathrm{631}}^1\times {\mathrm{5189}}^1$

素因数の和:5830

約数の個数: 12

約数和(自身を含む): 101682480

約数和(自身を除く): 19826005

約数列:

[1, 5, 25, 631, 3155, 5189, 15775, 25945, 129725, 3274259, 16371295, 81856475]

約数ペア:

[(1, 81856475), (5, 16371295), (25, 3274259), (631, 129725), (3155, 25945), (5189, 15775)]