28657587

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{13249}}^1$

素因数の和:13362

約数の個数: 16

約数和(自身を含む): 44096000

約数和(自身を除く): 15438413

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 13249, 39747, 92743, 278229, 1364647, 4093941, 9552529, 28657587]

約数ペア:

[(1, 28657587), (3, 9552529), (7, 4093941), (21, 1364647), (103, 278229), (309, 92743), (721, 39747), (2163, 13249)]