21191323139

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{490733}}^1$

素因数の和:490970

約数の個数: 16

約数和(自身を含む): 25125580800

約数和(自身を除く): 3934257661

約数列:

[1, 7, 31, 199, 217, 1393, 6169, 43183, 490733, 3435131, 15212723, 97655867, 106489061, 683591069, 3027331877, 21191323139]

約数ペア:

[(1, 21191323139), (7, 3027331877), (31, 683591069), (199, 106489061), (217, 97655867), (1393, 15212723), (6169, 3435131), (43183, 490733)]