20157709329

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{3505079}}^1$

素因数の和:3505162

約数の個数: 20

約数和(自身を含む): 30536256960

約数和(自身を除く): 10378547631

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 5751, 3505079, 10515237, 31545711, 94637133, 248860609, 283911399, 746581827, 2239745481, 6719236443, 20157709329]

約数ペア:

[(1, 20157709329), (3, 6719236443), (9, 2239745481), (27, 746581827), (71, 283911399), (81, 248860609), (213, 94637133), (639, 31545711), (1917, 10515237), (5751, 3505079)]