21731684

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{9719}}^1$

素因数の和:9779

約数の個数: 24

約数和(自身を含む): 41912640

約数和(自身を除く): 20180956

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 9719, 19438, 38876, 126347, 252694, 417917, 505388, 835834, 1671668, 5432921, 10865842, 21731684]

約数ペア:

[(1, 21731684), (2, 10865842), (4, 5432921), (13, 1671668), (26, 835834), (43, 505388), (52, 417917), (86, 252694), (172, 126347), (559, 38876), (1118, 19438), (2236, 9719)]