20840521

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{521}}^1$

素因数の和:732

約数の個数: 16

約数和(自身を含む): 23941008

約数和(自身を除く): 3100487

約数列:

[1, 13, 17, 181, 221, 521, 2353, 3077, 6773, 8857, 40001, 94301, 115141, 1225913, 1603117, 20840521]

約数ペア:

[(1, 20840521), (13, 1603117), (17, 1225913), (181, 115141), (221, 94301), (521, 40001), (2353, 8857), (3077, 6773)]