20402440

素因数分解:

$2^3\times 5^1\times {\mathrm{510061}}^1$

素因数の和:510072

約数の個数: 16

約数和(自身を含む): 45905580

約数和(自身を除く): 25503140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 510061, 1020122, 2040244, 2550305, 4080488, 5100610, 10201220, 20402440]

約数ペア:

[(1, 20402440), (2, 10201220), (4, 5100610), (5, 4080488), (8, 2550305), (10, 2040244), (20, 1020122), (40, 510061)]