21067879

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{5711}}^1$

素因数の和:5766

約数の個数: 16

約数和(自身を含む): 26320896

約数和(自身を除く): 5253017

約数列:

[1, 7, 17, 31, 119, 217, 527, 3689, 5711, 39977, 97087, 177041, 679609, 1239287, 3009697, 21067879]

約数ペア:

[(1, 21067879), (7, 3009697), (17, 1239287), (31, 679609), (119, 177041), (217, 97087), (527, 39977), (3689, 5711)]