128537855

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{311}}^1\times {\mathrm{631}}^1$

素因数の和:1078

約数の個数: 16

約数和(自身を含む): 156169728

約数和(自身を除く): 27631873

約数列:

[1, 5, 131, 311, 631, 655, 1555, 3155, 40741, 82661, 196241, 203705, 413305, 981205, 25707571, 128537855]

約数ペア:

[(1, 128537855), (5, 25707571), (131, 981205), (311, 413305), (631, 203705), (655, 196241), (1555, 82661), (3155, 40741)]