21645239

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{5981}}^1$

素因数の和:6046

約数の個数: 16

約数和(自身を含む): 27565056

約数和(自身を除く): 5919817

約数列:

[1, 7, 11, 47, 77, 329, 517, 3619, 5981, 41867, 65791, 281107, 460537, 1967749, 3092177, 21645239]

約数ペア:

[(1, 21645239), (7, 3092177), (11, 1967749), (47, 460537), (77, 281107), (329, 65791), (517, 41867), (3619, 5981)]