20710893

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51907}}^1$

素因数の和:51936

約数の個数: 16

約数和(自身を含む): 33221120

約数和(自身を除く): 12510227

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51907, 155721, 363349, 986233, 1090047, 2958699, 6903631, 20710893]

約数ペア:

[(1, 20710893), (3, 6903631), (7, 2958699), (19, 1090047), (21, 986233), (57, 363349), (133, 155721), (399, 51907)]