19799847

素因数分解:

$3^2\times {\mathrm{37}}^2\times {\mathrm{1607}}^1$

素因数の和:1687

約数の個数: 18

約数和(自身を含む): 29411928

約数和(自身を除く): 9612081

約数列:

[1, 3, 9, 37, 111, 333, 1369, 1607, 4107, 4821, 12321, 14463, 59459, 178377, 535131, 2199983, 6599949, 19799847]

約数ペア:

[(1, 19799847), (3, 6599949), (9, 2199983), (37, 535131), (111, 178377), (333, 59459), (1369, 14463), (1607, 12321), (4107, 4821)]