19977489

素因数分解:

$3^3\times 7^1\times {\mathrm{105701}}^1$

素因数の和:105717

約数の個数: 16

約数和(自身を含む): 33824640

約数和(自身を除く): 13847151

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 105701, 317103, 739907, 951309, 2219721, 2853927, 6659163, 19977489]

約数ペア:

[(1, 19977489), (3, 6659163), (7, 2853927), (9, 2219721), (21, 951309), (27, 739907), (63, 317103), (189, 105701)]