20630781

素因数分解:

$3^4\times {\mathrm{487}}^1\times {\mathrm{523}}^1$

素因数の和:1022

約数の個数: 20

約数和(自身を含む): 30941152

約数和(自身を除く): 10310371

約数列:

[1, 3, 9, 27, 81, 487, 523, 1461, 1569, 4383, 4707, 13149, 14121, 39447, 42363, 254701, 764103, 2292309, 6876927, 20630781]

約数ペア:

[(1, 20630781), (3, 6876927), (9, 2292309), (27, 764103), (81, 254701), (487, 42363), (523, 39447), (1461, 14121), (1569, 13149), (4383, 4707)]