28012467

素因数分解:

$3^1\times 7^4\times {\mathrm{3889}}^1$

素因数の和:3920

約数の個数: 20

約数和(自身を含む): 43583560

約数和(自身を除く): 15571093

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 3889, 7203, 11667, 27223, 81669, 190561, 571683, 1333927, 4001781, 9337489, 28012467]

約数ペア:

[(1, 28012467), (3, 9337489), (7, 4001781), (21, 1333927), (49, 571683), (147, 190561), (343, 81669), (1029, 27223), (2401, 11667), (3889, 7203)]