15171989

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{503}}^1$

素因数の和:680

約数の個数: 16

約数和(自身を含む): 18063360

約数和(自身を除く): 2891371

約数列:

[1, 7, 31, 139, 217, 503, 973, 3521, 4309, 15593, 30163, 69917, 109151, 489419, 2167427, 15171989]

約数ペア:

[(1, 15171989), (7, 2167427), (31, 489419), (139, 109151), (217, 69917), (503, 30163), (973, 15593), (3521, 4309)]