28408880

素因数分解:

$2^4\times 5^1\times {\mathrm{355111}}^1$

素因数の和:355124

約数の個数: 20

約数和(自身を含む): 66050832

約数和(自身を除く): 37641952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 355111, 710222, 1420444, 1775555, 2840888, 3551110, 5681776, 7102220, 14204440, 28408880]

約数ペア:

[(1, 28408880), (2, 14204440), (4, 7102220), (5, 5681776), (8, 3551110), (10, 2840888), (16, 1775555), (20, 1420444), (40, 710222), (80, 355111)]