20512970

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{1009}}^1$

素因数の和:1142

約数の個数: 32

約数和(自身を含む): 39268800

約数和(自身を除く): 18755830

約数列:

[1, 2, 5, 10, 19, 38, 95, 107, 190, 214, 535, 1009, 1070, 2018, 2033, 4066, 5045, 10090, 10165, 19171, 20330, 38342, 95855, 107963, 191710, 215926, 539815, 1079630, 2051297, 4102594, 10256485, 20512970]

約数ペア:

[(1, 20512970), (2, 10256485), (5, 4102594), (10, 2051297), (19, 1079630), (38, 539815), (95, 215926), (107, 191710), (190, 107963), (214, 95855), (535, 38342), (1009, 20330), (1070, 19171), (2018, 10165), (2033, 10090), (4066, 5045)]