21360845

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20441}}^1$

素因数の和:20476

約数の個数: 16

約数和(自身を含む): 29436480

約数和(自身を除く): 8075635

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 20441, 102205, 224851, 388379, 1124255, 1941895, 4272169, 21360845]

約数ペア:

[(1, 21360845), (5, 4272169), (11, 1941895), (19, 1124255), (55, 388379), (95, 224851), (209, 102205), (1045, 20441)]