18684289

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{653}}^1$

素因数の和:768

約数の個数: 16

約数和(自身を含む): 21095424

約数和(自身を除く): 2411135

約数列:

[1, 13, 31, 71, 403, 653, 923, 2201, 8489, 20243, 28613, 46363, 263159, 602719, 1437253, 18684289]

約数ペア:

[(1, 18684289), (13, 1437253), (31, 602719), (71, 263159), (403, 46363), (653, 28613), (923, 20243), (2201, 8489)]