21058505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{2551}}^1$

素因数の和:2696

約数の個数: 16

約数和(自身を含む): 27439104

約数和(自身を除く): 6380599

約数列:

[1, 5, 13, 65, 127, 635, 1651, 2551, 8255, 12755, 33163, 165815, 323977, 1619885, 4211701, 21058505]

約数ペア:

[(1, 21058505), (5, 4211701), (13, 1619885), (65, 323977), (127, 165815), (635, 33163), (1651, 12755), (2551, 8255)]