18878419

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3301}}^1$

素因数の和:3370

約数の個数: 16

約数和(自身を含む): 23246080

約数和(自身を除く): 4367661

約数列:

[1, 7, 19, 43, 133, 301, 817, 3301, 5719, 23107, 62719, 141943, 439033, 993601, 2696917, 18878419]

約数ペア:

[(1, 18878419), (7, 2696917), (19, 993601), (43, 439033), (133, 141943), (301, 62719), (817, 23107), (3301, 5719)]