20403721805

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{11304001}}^1$

素因数の和:11304044

約数の個数: 12

約数和(自身を含む): 25840948572

約数和(自身を除く): 5437226767

約数列:

[1, 5, 19, 95, 361, 1805, 11304001, 56520005, 214776019, 1073880095, 4080744361, 20403721805]

約数ペア:

[(1, 20403721805), (5, 4080744361), (19, 1073880095), (95, 214776019), (361, 56520005), (1805, 11304001)]