18117513

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{4759}}^1$

素因数の和:4818

約数の個数: 20

約数和(自身を含む): 27646080

約数和(自身を除く): 9528567

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 4759, 14277, 42831, 128493, 223673, 385479, 671019, 2013057, 6039171, 18117513]

約数ペア:

[(1, 18117513), (3, 6039171), (9, 2013057), (27, 671019), (47, 385479), (81, 223673), (141, 128493), (423, 42831), (1269, 14277), (3807, 4759)]