19785951

素因数分解:

$3^4\times {\mathrm{137}}^1\times {\mathrm{1783}}^1$

素因数の和:1932

約数の個数: 20

約数和(自身を含む): 29789232

約数和(自身を除く): 10003281

約数列:

[1, 3, 9, 27, 81, 137, 411, 1233, 1783, 3699, 5349, 11097, 16047, 48141, 144423, 244271, 732813, 2198439, 6595317, 19785951]

約数ペア:

[(1, 19785951), (3, 6595317), (9, 2198439), (27, 732813), (81, 244271), (137, 144423), (411, 48141), (1233, 16047), (1783, 11097), (3699, 5349)]