13126780

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1559}}^1$

素因数の和:1989

約数の個数: 24

約数和(自身を含む): 27649440

約数和(自身を除く): 14522660

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1559, 1684, 2105, 3118, 4210, 6236, 7795, 8420, 15590, 31180, 656339, 1312678, 2625356, 3281695, 6563390, 13126780]

約数ペア:

[(1, 13126780), (2, 6563390), (4, 3281695), (5, 2625356), (10, 1312678), (20, 656339), (421, 31180), (842, 15590), (1559, 8420), (1684, 7795), (2105, 6236), (3118, 4210)]