81606520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107377}}^1$

素因数の和:107407

約数の個数: 32

約数和(自身を含む): 193280400

約数和(自身を除く): 111673880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 107377, 214754, 429508, 536885, 859016, 1073770, 2040163, 2147540, 4080326, 4295080, 8160652, 10200815, 16321304, 20401630, 40803260, 81606520]

約数ペア:

[(1, 81606520), (2, 40803260), (4, 20401630), (5, 16321304), (8, 10200815), (10, 8160652), (19, 4295080), (20, 4080326), (38, 2147540), (40, 2040163), (76, 1073770), (95, 859016), (152, 536885), (190, 429508), (380, 214754), (760, 107377)]