21643905

素因数分解:

$3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{14009}}^1$

素因数の和:14120

約数の個数: 16

約数和(自身を含む): 34968960

約数和(自身を除く): 13325055

約数列:

[1, 3, 5, 15, 103, 309, 515, 1545, 14009, 42027, 70045, 210135, 1442927, 4328781, 7214635, 21643905]

約数ペア:

[(1, 21643905), (3, 7214635), (5, 4328781), (15, 1442927), (103, 210135), (309, 70045), (515, 42027), (1545, 14009)]