81019925

素因数分解:

$5^2\times 7^1\times {\mathrm{233}}^1\times {\mathrm{1987}}^1$

素因数の和:2237

約数の個数: 24

約数和(自身を含む): 115367616

約数和(自身を除く): 34347691

約数列:

[1, 5, 7, 25, 35, 175, 233, 1165, 1631, 1987, 5825, 8155, 9935, 13909, 40775, 49675, 69545, 347725, 462971, 2314855, 3240797, 11574275, 16203985, 81019925]

約数ペア:

[(1, 81019925), (5, 16203985), (7, 11574275), (25, 3240797), (35, 2314855), (175, 462971), (233, 347725), (1165, 69545), (1631, 49675), (1987, 40775), (5825, 13909), (8155, 9935)]