20020121

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{647}}^1$

素因数の和:784

約数の個数: 16

約数和(自身を含む): 22861440

約数和(自身を除く): 2841319

約数列:

[1, 11, 29, 97, 319, 647, 1067, 2813, 7117, 18763, 30943, 62759, 206393, 690349, 1820011, 20020121]

約数ペア:

[(1, 20020121), (11, 1820011), (29, 690349), (97, 206393), (319, 62759), (647, 30943), (1067, 18763), (2813, 7117)]