20566160

素因数分解:

$2^4\times 5^1\times {\mathrm{257077}}^1$

素因数の和:257090

約数の個数: 20

約数和(自身を含む): 47816508

約数和(自身を除く): 27250348

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257077, 514154, 1028308, 1285385, 2056616, 2570770, 4113232, 5141540, 10283080, 20566160]

約数ペア:

[(1, 20566160), (2, 10283080), (4, 5141540), (5, 4113232), (8, 2570770), (10, 2056616), (16, 1285385), (20, 1028308), (40, 514154), (80, 257077)]