20618897

素因数分解:

${\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:424

約数の個数: 16

約数和(自身を含む): 22861440

約数和(自身を除く): 2242543

約数列:

[1, 13, 71, 89, 251, 923, 1157, 3263, 6319, 17821, 22339, 82147, 231673, 290407, 1586069, 20618897]

約数ペア:

[(1, 20618897), (13, 1586069), (71, 290407), (89, 231673), (251, 82147), (923, 22339), (1157, 17821), (3263, 6319)]