20965165

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18973}}^1$

素因数の和:19008

約数の個数: 16

約数和(自身を含む): 28688688

約数和(自身を除く): 7723523

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18973, 94865, 246649, 322541, 1233245, 1612705, 4193033, 20965165]

約数ペア:

[(1, 20965165), (5, 4193033), (13, 1612705), (17, 1233245), (65, 322541), (85, 246649), (221, 94865), (1105, 18973)]