21716387

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2029}}^1$

素因数の和:2186

約数の個数: 16

約数和(自身を含む): 27283200

約数和(自身を除く): 5566813

約数列:

[1, 7, 11, 77, 139, 973, 1529, 2029, 10703, 14203, 22319, 156233, 282031, 1974217, 3102341, 21716387]

約数ペア:

[(1, 21716387), (7, 3102341), (11, 1974217), (77, 282031), (139, 156233), (973, 22319), (1529, 14203), (2029, 10703)]