21241683

素因数分解:

$3^4\times {\mathrm{191}}^1\times {\mathrm{1373}}^1$

素因数の和:1576

約数の個数: 20

約数和(自身を含む): 31920768

約数和(自身を除く): 10679085

約数列:

[1, 3, 9, 27, 81, 191, 573, 1373, 1719, 4119, 5157, 12357, 15471, 37071, 111213, 262243, 786729, 2360187, 7080561, 21241683]

約数ペア:

[(1, 21241683), (3, 7080561), (9, 2360187), (27, 786729), (81, 262243), (191, 111213), (573, 37071), (1373, 15471), (1719, 12357), (4119, 5157)]