20988477

素因数分解:

$3^4\times {\mathrm{53}}^1\times {\mathrm{4889}}^1$

素因数の和:4954

約数の個数: 20

約数和(自身を含む): 31951260

約数和(自身を除く): 10962783

約数列:

[1, 3, 9, 27, 53, 81, 159, 477, 1431, 4293, 4889, 14667, 44001, 132003, 259117, 396009, 777351, 2332053, 6996159, 20988477]

約数ペア:

[(1, 20988477), (3, 6996159), (9, 2332053), (27, 777351), (53, 396009), (81, 259117), (159, 132003), (477, 44001), (1431, 14667), (4293, 4889)]