128542160

素因数分解:

$2^4\times 5^1\times {\mathrm{1606777}}^1$

素因数の和:1606790

約数の個数: 20

約数和(自身を含む): 298860708

約数和(自身を除く): 170318548

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1606777, 3213554, 6427108, 8033885, 12854216, 16067770, 25708432, 32135540, 64271080, 128542160]

約数ペア:

[(1, 128542160), (2, 64271080), (4, 32135540), (5, 25708432), (8, 16067770), (10, 12854216), (16, 8033885), (20, 6427108), (40, 3213554), (80, 1606777)]