28640660

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{18127}}^1$

素因数の和:18215

約数の個数: 24

約数和(自身を含む): 60910080

約数和(自身を除く): 32269420

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 18127, 36254, 72508, 90635, 181270, 362540, 1432033, 2864066, 5728132, 7160165, 14320330, 28640660]

約数ペア:

[(1, 28640660), (2, 14320330), (4, 7160165), (5, 5728132), (10, 2864066), (20, 1432033), (79, 362540), (158, 181270), (316, 90635), (395, 72508), (790, 36254), (1580, 18127)]