28709755

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1\times {\mathrm{409}}^1$

素因数の和:654

約数の個数: 16

約数和(自身を含む): 35128800

約数和(自身を除く): 6419045

約数列:

[1, 5, 101, 139, 409, 505, 695, 2045, 14039, 41309, 56851, 70195, 206545, 284255, 5741951, 28709755]

約数ペア:

[(1, 28709755), (5, 5741951), (101, 284255), (139, 206545), (409, 70195), (505, 56851), (695, 41309), (2045, 14039)]