21371561

素因数分解:

${\mathrm{19}}^2\times {\mathrm{53}}^1\times {\mathrm{1117}}^1$

素因数の和:1208

約数の個数: 12

約数和(自身を含む): 23001732

約数和(自身を除く): 1630171

約数列:

[1, 19, 53, 361, 1007, 1117, 19133, 21223, 59201, 403237, 1124819, 21371561]

約数ペア:

[(1, 21371561), (19, 1124819), (53, 403237), (361, 59201), (1007, 21223), (1117, 19133)]