16663180

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1979}}^1$

素因数の和:2409

約数の個数: 24

約数和(自身を含む): 35093520

約数和(自身を除く): 18430340

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 1979, 2105, 3958, 4210, 7916, 8420, 9895, 19790, 39580, 833159, 1666318, 3332636, 4165795, 8331590, 16663180]

約数ペア:

[(1, 16663180), (2, 8331590), (4, 4165795), (5, 3332636), (10, 1666318), (20, 833159), (421, 39580), (842, 19790), (1684, 9895), (1979, 8420), (2105, 7916), (3958, 4210)]