20280351

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{74287}}^1$

素因数の和:74310

約数の個数: 16

約数和(自身を含む): 33281024

約数和(自身を除く): 13000673

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 74287, 222861, 520009, 965731, 1560027, 2897193, 6760117, 20280351]

約数ペア:

[(1, 20280351), (3, 6760117), (7, 2897193), (13, 1560027), (21, 965731), (39, 520009), (91, 222861), (273, 74287)]