128665229

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{21701}}^1$

素因数の和:21737

約数の個数: 18

約数和(自身を含む): 164522862

約数和(自身を除く): 35857633

約数列:

[1, 7, 11, 49, 77, 121, 539, 847, 5929, 21701, 151907, 238711, 1063349, 1670977, 2625821, 11696839, 18380747, 128665229]

約数ペア:

[(1, 128665229), (7, 18380747), (11, 11696839), (49, 2625821), (77, 1670977), (121, 1063349), (539, 238711), (847, 151907), (5929, 21701)]