51220780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197003}}^1$

素因数の和:197025

約数の個数: 24

約数和(自身を含む): 115838352

約数和(自身を除く): 64617572

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 197003, 394006, 788012, 985015, 1970030, 2561039, 3940060, 5122078, 10244156, 12805195, 25610390, 51220780]

約数ペア:

[(1, 51220780), (2, 25610390), (4, 12805195), (5, 10244156), (10, 5122078), (13, 3940060), (20, 2561039), (26, 1970030), (52, 985015), (65, 788012), (130, 394006), (260, 197003)]