12678211

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{1531}}^1$

素因数の和:1571

約数の個数: 18

約数和(自身を含む): 15980292

約数和(自身を除く): 3302081

約数列:

[1, 7, 13, 49, 91, 169, 637, 1183, 1531, 8281, 10717, 19903, 75019, 139321, 258739, 975247, 1811173, 12678211]

約数ペア:

[(1, 12678211), (7, 1811173), (13, 975247), (49, 258739), (91, 139321), (169, 75019), (637, 19903), (1183, 10717), (1531, 8281)]