20816360

素因数分解:

$2^3\times 5^1\times {\mathrm{520409}}^1$

素因数の和:520420

約数の個数: 16

約数和(自身を含む): 46836900

約数和(自身を除く): 26020540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 520409, 1040818, 2081636, 2602045, 4163272, 5204090, 10408180, 20816360]

約数ペア:

[(1, 20816360), (2, 10408180), (4, 5204090), (5, 4163272), (8, 2602045), (10, 2081636), (20, 1040818), (40, 520409)]