31890165

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{68581}}^1$

素因数の和:68620

約数の個数: 16

約数和(自身を含む): 52670976

約数和(自身を除く): 20780811

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 68581, 205743, 342905, 1028715, 2126011, 6378033, 10630055, 31890165]

約数ペア:

[(1, 31890165), (3, 10630055), (5, 6378033), (15, 2126011), (31, 1028715), (93, 342905), (155, 205743), (465, 68581)]