128440915

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{1249}}^1$

素因数の和:1542

約数の個数: 16

約数和(自身を含む): 156420000

約数和(自身を除く): 27979085

約数列:

[1, 5, 131, 157, 655, 785, 1249, 6245, 20567, 102835, 163619, 196093, 818095, 980465, 25688183, 128440915]

約数ペア:

[(1, 128440915), (5, 25688183), (131, 980465), (157, 818095), (655, 196093), (785, 163619), (1249, 102835), (6245, 20567)]