20512781510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157790627}}^1$

素因数の和:157790647

約数の個数: 16

約数和(自身を含む): 39763238256

約数和(自身を除く): 19250456746

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157790627, 315581254, 788953135, 1577906270, 2051278151, 4102556302, 10256390755, 20512781510]

約数ペア:

[(1, 20512781510), (2, 10256390755), (5, 4102556302), (10, 2051278151), (13, 1577906270), (26, 788953135), (65, 315581254), (130, 157790627)]