20512142690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157785713}}^1$

素因数の和:157785733

約数の個数: 16

約数和(自身を含む): 39761999928

約数和(自身を除く): 19249857238

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157785713, 315571426, 788928565, 1577857130, 2051214269, 4102428538, 10256071345, 20512142690]

約数ペア:

[(1, 20512142690), (2, 10256071345), (5, 4102428538), (10, 2051214269), (13, 1577857130), (26, 788928565), (65, 315571426), (130, 157785713)]