21493411

素因数分解:

${\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:294

約数の個数: 16

約数和(自身を含む): 22900320

約数和(自身を除く): 1406909

約数列:

[1, 37, 61, 89, 107, 2257, 3293, 3959, 5429, 6527, 9523, 200873, 241499, 352351, 580903, 21493411]

約数ペア:

[(1, 21493411), (37, 580903), (61, 352351), (89, 241499), (107, 200873), (2257, 9523), (3293, 6527), (3959, 5429)]