808215560

素因数分解:

$2^3\times 5^1\times {\mathrm{20205389}}^1$

素因数の和:20205400

約数の個数: 16

約数和(自身を含む): 1818485100

約数和(自身を除く): 1010269540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 20205389, 40410778, 80821556, 101026945, 161643112, 202053890, 404107780, 808215560]

約数ペア:

[(1, 808215560), (2, 404107780), (4, 202053890), (5, 161643112), (8, 101026945), (10, 80821556), (20, 40410778), (40, 20205389)]