13257881

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{1601}}^1$

素因数の和:1641

約数の個数: 18

約数和(自身を含む): 16710462

約数和(自身を除く): 3452581

約数列:

[1, 7, 13, 49, 91, 169, 637, 1183, 1601, 8281, 11207, 20813, 78449, 145691, 270569, 1019837, 1893983, 13257881]

約数ペア:

[(1, 13257881), (7, 1893983), (13, 1019837), (49, 270569), (91, 145691), (169, 78449), (637, 20813), (1183, 11207), (1601, 8281)]