16580781

素因数分解:

$3^4\times 7^1\times {\mathrm{29243}}^1$

素因数の和:29262

約数の個数: 20

約数和(自身を含む): 28308192

約数和(自身を除く): 11727411

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 29243, 87729, 204701, 263187, 614103, 789561, 1842309, 2368683, 5526927, 16580781]

約数ペア:

[(1, 16580781), (3, 5526927), (7, 2368683), (9, 1842309), (21, 789561), (27, 614103), (63, 263187), (81, 204701), (189, 87729), (567, 29243)]