20338970

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{661}}^1$

素因数の和:866

約数の個数: 32

約数和(自身を含む): 39036816

約数和(自身を除く): 18697846

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 181, 362, 661, 905, 1322, 1810, 3077, 3305, 6154, 6610, 11237, 15385, 22474, 30770, 56185, 112370, 119641, 239282, 598205, 1196410, 2033897, 4067794, 10169485, 20338970]

約数ペア:

[(1, 20338970), (2, 10169485), (5, 4067794), (10, 2033897), (17, 1196410), (34, 598205), (85, 239282), (170, 119641), (181, 112370), (362, 56185), (661, 30770), (905, 22474), (1322, 15385), (1810, 11237), (3077, 6610), (3305, 6154)]