81239902

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{15787}}^1$

素因数の和:15903

約数の個数: 16

約数和(自身を含む): 127314432

約数和(自身を除く): 46074530

約数列:

[1, 2, 31, 62, 83, 166, 2573, 5146, 15787, 31574, 489397, 978794, 1310321, 2620642, 40619951, 81239902]

約数ペア:

[(1, 81239902), (2, 40619951), (31, 2620642), (62, 1310321), (83, 978794), (166, 489397), (2573, 31574), (5146, 15787)]