21121347

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{1103}}^1$

素因数の和:1610

約数の個数: 16

約数和(自身を含む): 30417408

約数和(自身を除く): 9296061

約数列:

[1, 3, 13, 39, 491, 1103, 1473, 3309, 6383, 14339, 19149, 43017, 541573, 1624719, 7040449, 21121347]

約数ペア:

[(1, 21121347), (3, 7040449), (13, 1624719), (39, 541573), (491, 43017), (1103, 19149), (1473, 14339), (3309, 6383)]