81289075

素因数分解:

$5^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{2083}}^1$

素因数の和:2323

約数の個数: 24

約数和(自身を含む): 115770368

約数和(自身を除く): 34481293

約数列:

[1, 5, 7, 25, 35, 175, 223, 1115, 1561, 2083, 5575, 7805, 10415, 14581, 39025, 52075, 72905, 364525, 464509, 2322545, 3251563, 11612725, 16257815, 81289075]

約数ペア:

[(1, 81289075), (5, 16257815), (7, 11612725), (25, 3251563), (35, 2322545), (175, 464509), (223, 364525), (1115, 72905), (1561, 52075), (2083, 39025), (5575, 14581), (7805, 10415)]