28991217

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{1039}}^1$

素因数の和:1244

約数の個数: 16

約数和(自身を含む): 39536640

約数和(自身を除く): 10545423

約数列:

[1, 3, 71, 131, 213, 393, 1039, 3117, 9301, 27903, 73769, 136109, 221307, 408327, 9663739, 28991217]

約数ペア:

[(1, 28991217), (3, 9663739), (71, 408327), (131, 221307), (213, 136109), (393, 73769), (1039, 27903), (3117, 9301)]