28706980

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{10477}}^1$

素因数の和:10623

約数の個数: 24

約数和(自身を含む): 60730488

約数和(自身を除く): 32023508

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 10477, 20954, 41908, 52385, 104770, 209540, 1435349, 2870698, 5741396, 7176745, 14353490, 28706980]

約数ペア:

[(1, 28706980), (2, 14353490), (4, 7176745), (5, 5741396), (10, 2870698), (20, 1435349), (137, 209540), (274, 104770), (548, 52385), (685, 41908), (1370, 20954), (2740, 10477)]