21013299

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{63103}}^1$

素因数の和:63146

約数の個数: 12

約数和(自身を含む): 31173376

約数和(自身を除く): 10160077

約数列:

[1, 3, 9, 37, 111, 333, 63103, 189309, 567927, 2334811, 7004433, 21013299]

約数ペア:

[(1, 21013299), (3, 7004433), (9, 2334811), (37, 567927), (111, 189309), (333, 63103)]