20813212

素因数分解:

$2^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{6947}}^1$

素因数の和:7065

約数の個数: 24

約数和(自身を含む): 42021504

約数和(自身を除く): 21208292

約数列:

[1, 2, 4, 7, 14, 28, 107, 214, 428, 749, 1498, 2996, 6947, 13894, 27788, 48629, 97258, 194516, 743329, 1486658, 2973316, 5203303, 10406606, 20813212]

約数ペア:

[(1, 20813212), (2, 10406606), (4, 5203303), (7, 2973316), (14, 1486658), (28, 743329), (107, 194516), (214, 97258), (428, 48629), (749, 27788), (1498, 13894), (2996, 6947)]