28409770

素因数分解:

$2^1\times 5^1\times {\mathrm{647}}^1\times {\mathrm{4391}}^1$

素因数の和:5045

約数の個数: 16

約数和(自身を含む): 51228288

約数和(自身を除く): 22818518

約数列:

[1, 2, 5, 10, 647, 1294, 3235, 4391, 6470, 8782, 21955, 43910, 2840977, 5681954, 14204885, 28409770]

約数ペア:

[(1, 28409770), (2, 14204885), (5, 5681954), (10, 2840977), (647, 43910), (1294, 21955), (3235, 8782), (4391, 6470)]