19905131

素因数分解:

${\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{15661}}^1$

素因数の和:15733

約数の個数: 8

約数和(自身を含む): 21049728

約数和(自身を除く): 1144597

約数列:

[1, 31, 41, 1271, 15661, 485491, 642101, 19905131]

約数ペア:

[(1, 19905131), (31, 642101), (41, 485491), (1271, 15661)]