81966759

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{17987}}^1$

素因数の和:18035

約数の個数: 24

約数和(自身を含む): 131240448

約数和(自身を除く): 49273689

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4557, 17987, 53961, 125909, 377727, 557597, 881363, 1672791, 2644089, 3903179, 11709537, 27322253, 81966759]

約数ペア:

[(1, 81966759), (3, 27322253), (7, 11709537), (21, 3903179), (31, 2644089), (49, 1672791), (93, 881363), (147, 557597), (217, 377727), (651, 125909), (1519, 53961), (4557, 17987)]