131398351

素因数分解:

$7^2\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{211}}^1$

素因数の和:475

約数の個数: 24

約数和(自身を含む): 156608640

約数和(自身を除く): 25210289

約数列:

[1, 7, 49, 71, 179, 211, 497, 1253, 1477, 3479, 8771, 10339, 12709, 14981, 37769, 88963, 104867, 264383, 622741, 734069, 1850681, 2681599, 18771193, 131398351]

約数ペア:

[(1, 131398351), (7, 18771193), (49, 2681599), (71, 1850681), (179, 734069), (211, 622741), (497, 264383), (1253, 104867), (1477, 88963), (3479, 37769), (8771, 14981), (10339, 12709)]