20237620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{281}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 46096848

約数和(自身を除く): 25859228

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 277, 281, 554, 562, 1108, 1124, 1385, 1405, 2770, 2810, 3601, 3653, 5540, 5620, 7202, 7306, 14404, 14612, 18005, 18265, 36010, 36530, 72020, 73060, 77837, 155674, 311348, 389185, 778370, 1011881, 1556740, 2023762, 4047524, 5059405, 10118810, 20237620]

約数ペア:

[(1, 20237620), (2, 10118810), (4, 5059405), (5, 4047524), (10, 2023762), (13, 1556740), (20, 1011881), (26, 778370), (52, 389185), (65, 311348), (130, 155674), (260, 77837), (277, 73060), (281, 72020), (554, 36530), (562, 36010), (1108, 18265), (1124, 18005), (1385, 14612), (1405, 14404), (2770, 7306), (2810, 7202), (3601, 5620), (3653, 5540)]