21408035

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{3779}}^1$

素因数の和:3898

約数の個数: 16

約数和(自身を含む): 28304640

約数和(自身を除く): 6896605

約数列:

[1, 5, 11, 55, 103, 515, 1133, 3779, 5665, 18895, 41569, 207845, 389237, 1946185, 4281607, 21408035]

約数ペア:

[(1, 21408035), (5, 4281607), (11, 1946185), (55, 389237), (103, 207845), (515, 41569), (1133, 18895), (3779, 5665)]