21192145

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{4127}}^1$

素因数の和:4224

約数の個数: 16

約数和(自身を含む): 27740160

約数和(自身を除く): 6548015

約数列:

[1, 5, 13, 65, 79, 395, 1027, 4127, 5135, 20635, 53651, 268255, 326033, 1630165, 4238429, 21192145]

約数ペア:

[(1, 21192145), (5, 4238429), (13, 1630165), (65, 326033), (79, 268255), (395, 53651), (1027, 20635), (4127, 5135)]