28688569

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1553}}^1$

素因数の和:1609

約数の個数: 24

約数和(自身を含む): 37202760

約数和(自身を除く): 8514191

約数列:

[1, 7, 13, 29, 49, 91, 203, 377, 637, 1421, 1553, 2639, 10871, 18473, 20189, 45037, 76097, 141323, 315259, 585481, 989261, 2206813, 4098367, 28688569]

約数ペア:

[(1, 28688569), (7, 4098367), (13, 2206813), (29, 989261), (49, 585481), (91, 315259), (203, 141323), (377, 76097), (637, 45037), (1421, 20189), (1553, 18473), (2639, 10871)]