21604429

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{1109}}^1$

素因数の和:1161

約数の個数: 24

約数和(自身を含む): 28344960

約数和(自身を除く): 6740531

約数列:

[1, 7, 11, 23, 77, 121, 161, 253, 847, 1109, 1771, 2783, 7763, 12199, 19481, 25507, 85393, 134189, 178549, 280577, 939323, 1964039, 3086347, 21604429]

約数ペア:

[(1, 21604429), (7, 3086347), (11, 1964039), (23, 939323), (77, 280577), (121, 178549), (161, 134189), (253, 85393), (847, 25507), (1109, 19481), (1771, 12199), (2783, 7763)]