18986913

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{63929}}^1$

素因数の和:63949

約数の個数: 16

約数和(自身を含む): 30686400

約数和(自身を除く): 11699487

約数列:

[1, 3, 9, 11, 27, 33, 99, 297, 63929, 191787, 575361, 703219, 1726083, 2109657, 6328971, 18986913]

約数ペア:

[(1, 18986913), (3, 6328971), (9, 2109657), (11, 1726083), (27, 703219), (33, 575361), (99, 191787), (297, 63929)]