19721636

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{439}}^1\times {\mathrm{1021}}^1$

素因数の和:1475

約数の個数: 24

約数和(自身を含む): 37773120

約数和(自身を除く): 18051484

約数列:

[1, 2, 4, 11, 22, 44, 439, 878, 1021, 1756, 2042, 4084, 4829, 9658, 11231, 19316, 22462, 44924, 448219, 896438, 1792876, 4930409, 9860818, 19721636]

約数ペア:

[(1, 19721636), (2, 9860818), (4, 4930409), (11, 1792876), (22, 896438), (44, 448219), (439, 44924), (878, 22462), (1021, 19316), (1756, 11231), (2042, 9658), (4084, 4829)]