21259459

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{743}}^1$

素因数の和:858

約数の個数: 16

約数和(自身を含む): 23998464

約数和(自身を除く): 2739005

約数列:

[1, 13, 31, 71, 403, 743, 923, 2201, 9659, 23033, 28613, 52753, 299429, 685789, 1635343, 21259459]

約数ペア:

[(1, 21259459), (13, 1635343), (31, 685789), (71, 299429), (403, 52753), (743, 28613), (923, 23033), (2201, 9659)]