21101311

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{3559}}^1$

素因数の和:3595

約数の個数: 18

約数和(自身を含む): 26988360

約数和(自身を除く): 5887049

約数列:

[1, 7, 11, 49, 77, 121, 539, 847, 3559, 5929, 24913, 39149, 174391, 274043, 430639, 1918301, 3014473, 21101311]

約数ペア:

[(1, 21101311), (7, 3014473), (11, 1918301), (49, 430639), (77, 274043), (121, 174391), (539, 39149), (847, 24913), (3559, 5929)]