20971165

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1\times {\mathrm{383}}^1$

素因数の和:668

約数の個数: 16

約数和(自身を含む): 25878528

約数和(自身を除く): 4907363

約数列:

[1, 5, 47, 233, 235, 383, 1165, 1915, 10951, 18001, 54755, 89239, 90005, 446195, 4194233, 20971165]

約数ペア:

[(1, 20971165), (5, 4194233), (47, 446195), (233, 90005), (235, 89239), (383, 54755), (1165, 18001), (1915, 10951)]