1684557

素因数分解:

$3^4\times 7^1\times {\mathrm{2971}}^1$

素因数の和:2990

約数の個数: 20

約数和(自身を含む): 2876896

約数和(自身を除く): 1192339

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 2971, 8913, 20797, 26739, 62391, 80217, 187173, 240651, 561519, 1684557]

約数ペア:

[(1, 1684557), (3, 561519), (7, 240651), (9, 187173), (21, 80217), (27, 62391), (63, 26739), (81, 20797), (189, 8913), (567, 2971)]