21969213

素因数分解:

$3^1\times 7^1\times {\mathrm{727}}^1\times {\mathrm{1439}}^1$

素因数の和:2176

約数の個数: 16

約数和(自身を含む): 33546240

約数和(自身を除く): 11577027

約数列:

[1, 3, 7, 21, 727, 1439, 2181, 4317, 5089, 10073, 15267, 30219, 1046153, 3138459, 7323071, 21969213]

約数ペア:

[(1, 21969213), (3, 7323071), (7, 3138459), (21, 1046153), (727, 30219), (1439, 15267), (2181, 10073), (4317, 5089)]