16391781

素因数分解:

$3^3\times 7^1\times {\mathrm{86729}}^1$

素因数の和:86745

約数の個数: 16

約数和(自身を含む): 27753600

約数和(自身を除く): 11361819

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 86729, 260187, 607103, 780561, 1821309, 2341683, 5463927, 16391781]

約数ペア:

[(1, 16391781), (3, 5463927), (7, 2341683), (9, 1821309), (21, 780561), (27, 607103), (63, 260187), (189, 86729)]