660342020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2539777}}^1$

素因数の和:2539799

約数の個数: 24

約数和(自身を含む): 1493389464

約数和(自身を除く): 833047444

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2539777, 5079554, 10159108, 12698885, 25397770, 33017101, 50795540, 66034202, 132068404, 165085505, 330171010, 660342020]

約数ペア:

[(1, 660342020), (2, 330171010), (4, 165085505), (5, 132068404), (10, 66034202), (13, 50795540), (20, 33017101), (26, 25397770), (52, 12698885), (65, 10159108), (130, 5079554), (260, 2539777)]