19779957

素因数分解:

$3^6\times {\mathrm{43}}^1\times {\mathrm{631}}^1$

素因数の和:692

約数の個数: 28

約数和(自身を含む): 30394144

約数和(自身を除く): 10614187

約数列:

[1, 3, 9, 27, 43, 81, 129, 243, 387, 631, 729, 1161, 1893, 3483, 5679, 10449, 17037, 27133, 31347, 51111, 81399, 153333, 244197, 459999, 732591, 2197773, 6593319, 19779957]

約数ペア:

[(1, 19779957), (3, 6593319), (9, 2197773), (27, 732591), (43, 459999), (81, 244197), (129, 153333), (243, 81399), (387, 51111), (631, 31347), (729, 27133), (1161, 17037), (1893, 10449), (3483, 5679)]