28278890

素因数分解:

$2^1\times 5^1\times {\mathrm{557}}^1\times {\mathrm{5077}}^1$

素因数の和:5641

約数の個数: 16

約数和(自身を含む): 51003432

約数和(自身を除く): 22724542

約数列:

[1, 2, 5, 10, 557, 1114, 2785, 5077, 5570, 10154, 25385, 50770, 2827889, 5655778, 14139445, 28278890]

約数ペア:

[(1, 28278890), (2, 14139445), (5, 5655778), (10, 2827889), (557, 50770), (1114, 25385), (2785, 10154), (5077, 5570)]