16380325

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{3877}}^1$

素因数の和:3913

約数の個数: 18

約数和(自身を含む): 21999894

約数和(自身を除く): 5619569

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 3877, 4225, 19385, 50401, 96925, 252005, 655213, 1260025, 3276065, 16380325]

約数ペア:

[(1, 16380325), (5, 3276065), (13, 1260025), (25, 655213), (65, 252005), (169, 96925), (325, 50401), (845, 19385), (3877, 4225)]