21281706

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{28837}}^1$

素因数の和:28886

約数の個数: 24

約数和(自身を含む): 47236644

約数和(自身を除く): 25954938

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369, 738, 28837, 57674, 86511, 173022, 259533, 519066, 1182317, 2364634, 3546951, 7093902, 10640853, 21281706]

約数ペア:

[(1, 21281706), (2, 10640853), (3, 7093902), (6, 3546951), (9, 2364634), (18, 1182317), (41, 519066), (82, 259533), (123, 173022), (246, 86511), (369, 57674), (738, 28837)]