20781921385

素因数分解:

$5^1\times {\mathrm{83}}^1\times {\mathrm{307}}^1\times {\mathrm{163117}}^1$

素因数の和:163512

約数の個数: 16

約数和(自身を含む): 25321133376

約数和(自身を除く): 4539211991

約数列:

[1, 5, 83, 307, 415, 1535, 25481, 127405, 163117, 815585, 13538711, 50076919, 67693555, 250384595, 4156384277, 20781921385]

約数ペア:

[(1, 20781921385), (5, 4156384277), (83, 250384595), (307, 67693555), (415, 50076919), (1535, 13538711), (25481, 815585), (127405, 163117)]