20683971

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{9949}}^1$

素因数の和:9976

約数の個数: 32

約数和(自身を含む): 38208000

約数和(自身を除く): 17524029

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 189, 231, 297, 693, 2079, 9949, 29847, 69643, 89541, 109439, 208929, 268623, 328317, 626787, 766073, 984951, 1880361, 2298219, 2954853, 6894657, 20683971]

約数ペア:

[(1, 20683971), (3, 6894657), (7, 2954853), (9, 2298219), (11, 1880361), (21, 984951), (27, 766073), (33, 626787), (63, 328317), (77, 268623), (99, 208929), (189, 109439), (231, 89541), (297, 69643), (693, 29847), (2079, 9949)]