81321721

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{1289}}^1$

素因数の和:1536

約数の個数: 16

約数和(自身を含む): 91889280

約数和(自身を除く): 10567559

約数列:

[1, 13, 23, 211, 299, 1289, 2743, 4853, 16757, 29647, 63089, 271979, 385411, 3535727, 6255517, 81321721]

約数ペア:

[(1, 81321721), (13, 6255517), (23, 3535727), (211, 385411), (299, 271979), (1289, 63089), (2743, 29647), (4853, 16757)]