21536709

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{7129}}^1$

素因数の和:7204

約数の個数: 16

約数和(自身を含む): 30801600

約数和(自身を除く): 9264891

約数列:

[1, 3, 19, 53, 57, 159, 1007, 3021, 7129, 21387, 135451, 377837, 406353, 1133511, 7178903, 21536709]

約数ペア:

[(1, 21536709), (3, 7178903), (19, 1133511), (53, 406353), (57, 377837), (159, 135451), (1007, 21387), (3021, 7129)]